UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
FORM 10-K
(Mark One)

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the year ended December 31, 20192021
or
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from                      to                     
Commission File Number: 001-36373
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TRINET GROUP, INC.INC.
(Exact Name of Registrant as Specified in its Charter)
Delaware95-3359658
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer
Identification No.)
One Park Place,Suite 600
Dublin,CA94568
(Address of principal executive offices)(Zip Code)
Registrant’s telephone number, including area code: (510(510) 352-5000
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common stock par value $0.000025 per shareTNETNew York Stock Exchange
Securities registered pursuant to Section 12(g) of the Act: None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes      No  
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes      No  
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes      No  
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes      No  
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filerAccelerated filerNon-accelerated filer
Smaller reporting companyEmerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  Yes      No  
Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes      No  
The aggregate market value of the voting and non-voting common equity held by non-affiliates of the Registrant, based on the closing price of the shares of common stock on The New York Stock Exchange on June 30, 2019,2021, was $3.0$2.9 billion.
The number of shares of Registrant’s Common Stock outstanding as of February 6, 20207, 2022 was 68,750,437.65,700,174.
Portions of the Registrant’s Definitive Proxy Statement to be issued in connection with its Annual Meeting of Stockholders, scheduled to be held on June 4, 2020,May 24, 2022, are incorporated by reference into Part III of this Form 10-K.


TABLE OF CONTENTS



TRINET GROUP, INC.
Form 10-K - Annual Report
For the Year Ended December 31, 20192021


TABLE OF CONTENTS
Form 10-K
Cross Reference
Page
Part I, Item 1.
Part I, Item 1A.
Part I, Item 1B.
Part I, Item 2.
Part I, Item 3.
Part I, Item 4.
Part II, Item 5.
Part II, Item 6.
Part II, Item 7.
Part II, Item 7A.
Part II, Item 8.
Part II, Item 9.
Part II, Item 9A.
Part II, Item 9B.
Part II, Item 9C.
Part III, Item 10.
Part III, Item 11.
Part III, Item 12.
Part III, Item 13.
Part III, Item 14.
Part IV, Item 15.
Part IV, Item 16.




Glossary of Acronyms and Abbreviations
Acronyms and abbreviations are used throughout this report, particularly in Part I, Item 1. Business; Part 1,I, Item 1A. Risk Factors; Part II, Item 7. MD&A; Part II, Item 7A. Quantitative and Qualitative Disclosures About Market Risk and Part II, Item 8. Financial Statements and Supplementary Data.
AB52018 Term LoanOur $425 million term loan A executed in June 2018 and repaid in 2021
2021 Credit ProgramOur 2021 program to provide eligible clients with credits, subject to predefined conditions and based on certain pandemic related excess health care cost savings achieved.
2021 Credit AgreementOur credit agreement dated February 26, 2021, including our $500 million revolving line of credit.
2029 NotesOur $500 million senior unsecured notes maturing in March 2029
AB5Assembly Bill 5
ACAThe Patient Protection and Affordable Care Act
ACHAutomated Clearinghouse Transaction
AFSAvailable-for-sale
ASCARPAAmerican Rescue Plan Act
ASCAccounting standards codification
ASUASOAdministrative Services Organization
ASUAccounting standards update
CCPACARES ActCoronavirus Aid Relief and Economic Security Act
CCPACalifornia Consumer Privacy Act of 2018
COBRACEOChief Executive Officer
CFOChief Financial Officer
COBRAConsolidated Omnibus Budget Reconciliation Act
COPSCost of providing services
COSOCommittee of Sponsoring Organizations of Treadway Commission
COVID-19Novel coronavirus
CPRACalifornia Privacy Rights Act
D&ADepreciation and amortization expenses
DOLU.S. Department of Labor
EBITDAEarnings before interest expense, taxes, depreciation and amortization of intangible assets
EPLIEmployment Practices Liability Insurance
EPSEarnings Per Share
ERISAEmployee Retirement Income Security Act of 1974
ESACEmployer Services Assurance Corporation
ESPPEmployee stock purchase plan
ETREffective tax rate
FASBFinancial Accounting Standards Board
FLSAFFCRAFamilies First Coronavirus Response Act
FLSAFair Labor Standards Act
G&AGeneral and administrative
GAAPGenerally Accepted Accounting Principles in the United States
HIPAAHealth Insurance Portability and Accountability Act of 1996
HITECH ActHealth Information Technology for Economic and Clinical Health Act of 2009
HRHuman Resources
IBNPIncurred but not yet paid
IBNRIncurred but not yet reported
IGPICRInsurance cost ratio
IGPIndemnity Guarantee Payment
IRSIOMIntegrated Open Market
IRSInternal Revenue Service
ISR
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ISRInsurance service revenues
LDF
LDFLoss development factor
LIBORLondon Inter-bank Offered Rate
MCTMedical cost trend
MD&AManagement's Discussion and Analysis of Financial Condition and Results of Operations
NIMOENet Insurance MarginOperating expenses
NISRPCAOBNet Insurance Service RevenuesPublic Company Accounting Oversight Board
NSRPEONetProfessional Employer Organization
PFCPayroll funds collected
PHIProtected Health Information
PPPPaycheck Protection Program, a loan program administered by the U.S. Small Business Administration
PPPFAPaycheck Protection Program Flexibility Act
PSRProfessional service revenues
OERecovery CreditOperating expenses2020 Program to provide eligible clients with one-time reductions against fees for future services

Reg FDRegulation Fair Disclosure
ROURight-of-use
RSARestricted Stock Award
RSURestricted Stock Unit
SBAU.S. Small Business Administration
SBCStock Based Compensation
S&MSales and marketing
S&PStandard & Poor's
SD&PSystems development and programming
SECU.S. Securities and Exchange Commission
SMBSmall and medium-size business
TCJA
1


GLOSSARY

PCAOBPublic Company Accounting Oversight Board
PEOProfessional Employer Organization
PFCPayroll funds collected
PHIProtected Health Information
PSRProfessional service revenues
ROURight-of-use
RSARestricted Stock Award
RSURestricted Stock Unit
SBCStock Based Compensation
S&MSales and marketing
S&P 500Standard and Poor's 500 Stock Index
SD&PSystems development and programming
SECSecurities and Exchange Commission
SMBSmall to midsize business
TCJATax Cuts and Jobs Act of 2017
U.S.United States
WSEWorksite employee


WSEWorksite employee
YTDYear to date
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BUSINESS
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Cautionary Note Regarding Forward-Looking Statements
For purposes of this Annual Report on Form 10-K (Form 10-K), the terms “TriNet,” “the Company,” “we,” “us” and “our” refer to TriNet Group, Inc., and its subsidiaries. This Annual Report on Form 10-K (Form 10-K) contains statements that are not historical in nature, are predictive in nature, or that depend upon or refer to future events or conditions or otherwise contain forward-looking statements within the meaning of Section 21 of the Securities Exchange Act of 1934, as amended, and the Private Securities Litigation Reform Act of 1995. Forward-looking statements are often identified by the use of words such as, but not limited to, “ability,” “anticipate,” “believe,” “can,” “continue,” “could,” “design,” “estimate,” “expect,” “forecast,” “hope,” “impact,” “intend,” “may,” “outlook,” “plan,” “potential,” “predict,” “project,” “seek,” “should,” “strategy,” “target,” “value,” “will,” “would” and similar expressions or variations intended to identify forward-looking statements. Examples of forward-looking statements include, among others, TriNet’s expectations regarding: the execution of a definitive agreement to acquire Zenefits; our ability to support the economic recovery of our clients and SMBs; market acceptance of our new support, service and product offerings, including our Connect 360 service model and Financial Services Preferred and IOM products; the impact of our annual TriNet PeopleForce conference; our expectations regarding medical utilization rates by our WSEs; the impact of the COVID-19 pandemic on regulations and government programs; the impact of our 2020 Recovery Credit program and our 2021 Credit Program and their suitability for generating client loyalty and retention; our ability to modify or develop service offerings to assist clients affected by COVID-19; the impact of our vertical approach,approach; our ability to leverage our scale and industry HR experience to deliver vertical product and service offerings; the growthimpact of our customerplans to continue to grow our client base; planned improvements to our technology platform; our ability to drive operating efficiencies and improve the customerclient experience; the impact of our customerclient service initiatives; our continued ability to provide access to a broad range of benefit programs on a cost-effective basis; the volume and severity of insurance claims and the impact of COVID-19 on those claims; the effectiveness of our risk strategies for, and management of, workers' compensation and health benefit insurance costs and deductibles; the metrics that may be indicators of future financial performance; the relative value of our benefit offerings versus those SMBs can independently obtain; the impact that our benefit offerings have for SMBs seeking to attract and retain employees; the effectiveness of our strategies for mitigation of EPLI risk; the principal competitive drivers in our market; our plans to retain clients and manage client attrition; our investment strategy and its impact on our ability to generate future interest income, net income, and Adjusted EBITDA; seasonal trends and their impact on our business;business, including due to COVID-19; fluctuations in the period-to-period timing of when we incur certain operating expenses; the estimates and assumptions we use to prepare our financial statements; and other expectations, outlooks and forecasts on our future business, operational and financial performance.
Important factors that could cause actual results, level of activity, performance or achievements to differ materially from those expressed or implied by these forward-looking statements are discussed above and throughout this Form 10-K, including under Part I, Item 1A. Risk Factors, and Part II, Item 7. MD&A, and in the other periodic filings we make with the SEC, and including risk factors associated with: the economic, health and business disruption caused by the COVID-19 pandemic; the impact of the COVID-19 pandemic on our ability to mitigateclients and prospects, insurance costs and operations; the business risks we face as a co-employer;impact of the COVID-19 pandemic on the laws and regulations that impact our industry and clients; our ability to manage unexpected changes in workers’ compensation and health insurance claims and costs by worksite employees; our ability to mitigate the business risks we face as a co-employer; the effects of volatility in the financial and economic environment on the businesses that make up our client base; loss of clients for reasons beyond our control; the short-term contracts we typically use with our clients; the impact of the concentration ofregional or industry-specific economic and health factors on our clients in certain geographies and industries;operations; the impact of failures or limitations in the business systems we rely upon; the impact of our 2020 Recovery Credit program and 2021 Credit Program; adverse changes in our insurance coverage or our relationships with key insurance carriers; our ability to manageimprove our client attrition; our ability to improve ourservices and technology to satisfy regulatory requirements and meet the expectations of our clients;clients and manage client attrition; our ability to effectively integrate businesses we have acquired or may acquire in the future; our ability to effectively manage and improve our operational processes; our ability to attract and retain qualified personnel; the effects of increased competition and our ability to compete effectively; the impact on our business of cyber-attacks and security breaches; our ability to secure our information technology infrastructure and our confidential, sensitive and personal information from cyber-attacks and security breaches;information; our ability to comply with constantly evolving data privacy and security laws; our ability to manage changes in, uncertainty regarding, or adverse application of the complex laws and regulations that govern our business; changing laws and regulations governing health insurance and employee benefits; our ability to be recognized as an employer of worksite employees under federal and state regulations; changes in the laws and regulations that govern what it means to be an employer, employee or independent contractor; our ability to comply with the laws and regulations that govern PEOs and other similar industries; the outcome of existing and future legal and tax proceedings; fluctuation in our results of operation and stock price due to factors outside of our control, such
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as the volume and severity of our workers’ compensation and health insurance claims and the amount and timing of our insurance costs, operating expenses and capital expenditure requirements; our ability to comply with the restrictions of our credit facility and meet our debt obligations; and the impact of concentrated ownership in our stock. Any of these factors could cause our actual results to differ materially from our anticipated results.
Forward-looking statements are not guarantees of future performance, but are based on management’s expectations as of the date of this Form 10-K and assumptions that are inherently subject to uncertainties, risks and changes in circumstances that are difficult to predict. Forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to be materially different from our current expectations and any past results, performance or achievements. Given these risks and uncertainties, readers are cautioned not to place undue reliance on such forward-looking statements.

3


BUSINESS


The information provided in this Form 10-K is based upon the facts and circumstances known atas of the date of this time,Form 10-K, and any forward-looking statements made by us in this Form 10-K speak only as of the date of this Form 10-K. We undertake no obligation to revise or update any of the information provided in this Form 10-K, except as required by law.
Part II, Item 6. Selected Financial Data and Part II, Item 7.The MD&A of this Form 10-K includeincludes references to our performance measures presented in conformity with GAAP and other non-GAAP financial measures that we use to manage our business, to make planning decisions, to allocate resources and to use as performance measures in our executive compensation plans. Refer to the Non-GAAP Financial Measures in Part II, Item 6. Selected Financial Data within our MD&A for definitions and reconciliations from GAAP measures.

Website Disclosures

We use our website (www.trinet.com) to announce material non-public information to the public and to comply with our disclosure obligations under Regulation Fair Disclosure (Reg FD). We also use our website to communicate with the public about our Company, our services, and other matters. Our SEC filings, press releases and recent public conference calls and webcasts can also be found on our website. The information we post on our website could be deemed to be material information under Reg FD. We encourage investors and others interested in our Company to review the information we post on our website. Information contained in or accessible through our website is not a part of this report.
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4



PART I
Item 1. Business
TriNet is a leading provider of HR expertise, payroll services, employee benefits and employment risk mitigation services for SMBs. Since our founding in 1988, TriNet has served, and continues to serve, thousands of SMBs. For the year ended December 31, 2019,In 2021, we processed $41.7$55 billion in payroll and payroll taxes for our clients and ended 2019the year with approximately 18,90016,300 clients and 340,000364,900 WSEs, primarily in the U.S.
Our Products and Services
We deliver a comprehensive suite of products and services that facilitates the administrationhelp our clients administer and management ofmanage various HR-related needs and functions, for our clients, includingsuch as compensation and benefits, payroll processing, employee data, health insurance and workers' compensation programs, and other transactional HR needs using our technology platform and HR, benefits and compliance expertise. We empower SMBs to focus on what matters most - growing their business.
We also leverage our scale and industry HR experience to deliver product andour service offerings tailored for SMBs in specific industries.industry verticals. We believe our approach, which we call our vertical approach is a key differentiator for us and creates additional value for our clients by allowing our product and service offerings to addressaddressing their industry-specific HR needs in different client industries.needs. We offer six industry-tailored vertical products,services: TriNet Financial Services, TriNet Life Sciences, TriNet Main Street, TriNet Nonprofit, TriNet Professional Services, and TriNet Technology.
Our comprehensive HR products and solutions include the following capabilities:
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HR CONSULTING EXPERTISE
BENEFIT

OPTIONS
PAYROLL SERVICESRISK MITIGATIONTECHNOLOGY
PLATFORM
tnet-20211231_g2.jpgHR Consulting Expertise
We use the collective knowledge and experience of our teams of HR, benefits, risk management and compliance professionals to help clients manage many of the administrative, regulatory and practical requirements associated with being employers. Our HRWe do this by incorporating our knowledge and experience into our services and our technology platform and by making our professionals and services helpavailable to consult with clients addresson a variety of HR issues,needs, including consulting on talent management, retention and terminations, benefits enrollment, immigration and visas, payroll tax credits, laboremployment law and regulatory developments and many other industry-specific and general HR topics. Depending on their needs, our clients and WSEs have access to varying levels of service and support from our HR professionals, ranging from call center support for basic questions to pooled HR resources, to onsite consulting and services.resources. Our HR professionals also provide additional specialized HR consulting and services upon request.
tnet-20211231_g3.jpgBenefit Options
We utilize our scale to provide our clients and WSEs access to a broad range of cost-effective, TriNet-sponsored employee benefit and insurance programs at a costcosts that we believe most of our clients would be unable to obtain on their own. We believe that our TriNet-sponsored programs help clients compete for talent against larger businesses. Our benefit and insurance programs are designed to comply with federal, state and local regulations, and our benefit and insurance service offerings include plan selection and administration, enrollment management, leave management, plan document distribution and WSE and client communications.
Under our benefit and insurance programs, we pay third-party insurance carriers for WSE insurance benefits and reimburse insurance carriers or third-party administrators for claims payments within our insurance deductible layer, where applicable.

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We sponsor and administer several fully insured employee benefit plans for our WSEs through a broad range of carriers, including group health, dental, vision, short- and long-term disability, and life insurance as an employer plan sponsor under Section 3(5) of ERISA. We also offerprovide for other benefit programs to be made available to WSEs, including flexible spending accounts, health savings accounts, retirement benefits, COBRA benefits, supplemental insurance, commuter benefits, home insurance, critical illness insurance, accident insurance, hospital indemnity, pet insurance, and auto insurance. For further discussion of our fully insuredinsurance programs, including policies where we reimburse our carriers for certain amounts relating to claims, refer to Note 1 in Part II, Item 8. Financial Statements and Supplementary Data, of this Form 10-K.
tnet-20211231_g4.jpgPayroll Services
We help clients manage all aspects of their employee compensation by providing multi-state payroll processing, tax administration services and other payroll-related services, such as time and attendance management, time off and overtime tracking, and expense management solutions. Our clients and WSEs can access payroll and tax information using our online and mobile tools. Our tax administration services include calculating, withholding, remitting and reporting certain federal, state and local payroll and unemployment taxes on behalf of clients and WSEs.
tnet-20211231_g5.jpgRisk Mitigation
We monitor employment-related legal and regulatory developments at the federal, state, and local levels to help our clients comply with employment laws and mitigate many of the risks associated with being an employer. We provide HR guidance on employment laws and regulations, including those relating to minimum wage, unemployment insurance, family and medical leave and anti-discrimination. We also ensure that our TriNet-sponsored benefit plans comply with applicable laws and regulations, like the ACA, reducing this compliance burden to our clients.
We provide fully insuredfully-insured workers' compensation insurance coverage for our clients and WSEs through insurance policies that we negotiate with our third-party insurance carriers. We manage the deductible risk that we assume in connection with these policies by being selective in the types of businesses that we take on as new clients, and by monitoring claims data and the performance of our carriers and third-party claims management service providers. In addition, we advise clients on workers’ compensation best practices, including by performing workplace assessment consultations and assisting with client efforts to identify conditions or practices that might lead to employee injuries.
We also provide EPLI coverage for our clients through an insurance policiespolicy that we obtain from a third-party EPLI carrier. These policies provideThis policy provides coverage for certain claims that arise in the course of the employment relationship, such as discrimination, harassment, and certain other employee claims, with a per-claim retention amount. The retention amount under this policy, which functions like a deductible, is splitallocated on a pre-determined basis between the client and TriNet. Our HR professionals assist our clients in implementing HR best practices to help avoid and reduce the cost of employment-related liabilities. Litigation defense is conducted by ourOur preferred outside employment law firms.firms defend covered EPLI claims.
tnet-20211231_g6.jpgTechnology Platform
Our technology platform includes online and mobile tools that allow our clients and WSEs to store, view, and manage HR information and administer a variety of HR transactions, such as payroll processing, tax administration, employee onboarding and termination, compensation reporting, expense management, and benefits enrollment and administration. Our online tools also incorporate workforce analytics, allowing clients to generate HR data, payroll, total compensation and other custom reports.
In 2019, we continued We invest time and resources in an effort to make significant investments inimprove and expand our technology platform on projects intended to provide our users with improved functionality, HR management options, and security. We intend to continue to invest in our technology platform to improve its functionality, ease of use, security and the overall user experience forproducts and services that we offer. For example, in 2020, we adopted a new client service engagement support model, called Connect 360, that we believe will benefit our clients and WSEs. We believeWSEs by providing them with improved support services. Similarly, in 2021, we launched Financial Services Preferred, and a new product, called IOM, that offers clients the continued investment in and improvement of our technology platform will drive operating efficiencies and improve the client experience.
We invested approximately $74 million, $81 million and $74 million, during 2019, 2018 and 2017, respectively, developing our technology platform.

option to receive PEO services from TriNet while also obtaining client-sponsored health benefits from a third-party broker that partners with TriNet.
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Our Co-Employment Model
We operate using a co-employment model, under which employment-related responsibilities are allocated by contract between us and our clients. This model allows WSEs to receive the full benefit of our services, including access to TriNet-sponsored employee benefit plan offerings. Each of our clients enters into a client service agreement with us that defines the suite of professional and insurance services and benefits to be provided by us, the fees payable to us, and the division of responsibilities between us and our clients as co-employers. WSEs also separately acknowledge the co-employment relationship and the allocation of employment-related responsibilities between TriNet and our clients. The division of responsibilities under our client service agreements is typically as follows:
TriNet Responsibilities
We generally assume responsibility for, and manage certain risks associated with:
payments of salaries, wages and certain other compensation to WSEs from our own bank accounts (based on client reports and payments), including the processing of garnishment and wage deduction orders,
reporting of wages, withholding and deposit of associated payroll taxes as the employer of record,
provision and maintenance of workers' compensation insurance and workers' compensation claims processing,
access to, and administration of, group health, welfare, and retirement benefits to WSEs under TriNet-sponsored benefit plans,
compliance with applicable law for certain TriNet-sponsored employee benefits offered to WSEs,
administration of unemployment claims, and
provision of various HR policies and agreements, including employee handbooks and worksite employee agreements describing the co-employment relationship.
Client Responsibilities
Our clients are responsible for employment-related responsibilities that we do not specifically assume, generally including:
day-to-day management of their worksites and WSEs,
compliance with laws associated with the classification of employees as exempt or non-exempt, such as overtime pay and minimum wage law compliance,
accurate and timely reporting to TriNet of compensation and deduction information, including information relating to hours worked, rates of pay, salaries, wages and other compensation, and work locations,
accurate and timely reporting to TriNet of information relating to workplace injuries, employee hires and termination, and certain other information relevant to TriNet’s services,
provision and administration of any employee benefits not provided by TriNet such as equity incentive plans,
compliance with all laws and regulations applicable to the clients' workplace and business, including work eligibility laws, laws relating to workplace safety or the environment, laws relating to family and medical leave, laws pertaining to employee organizing efforts and collective bargaining and employee termination notice requirements,
payment of TriNet invoices, which include salary, wages and other relevant compensation to WSEs and applicable employment taxes and service fees, and
all other matters for which TriNet does not assume responsibility under the client service agreement, such as intellectual property ownership and protection and liability for products produced and services provided by the client company to its own customers.clients.
As a result of our co-employment relationships, we are liable for payment of salary, wages and certain other compensation to the WSEs as reported and paid to us by the client, and are responsible for providing specified employee benefits to such persons to the extent provided in each client service agreement and under federal and state law. In most instances, clients are required to remit payment prior to the applicable payroll date by wire transfer or ACH.

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We also assume responsibility for payment and liability for the withholding and remittance of federal and state income and employment taxes with respect to salaries, wages and certain other compensation paid to WSEs, although we reserve the right to seek recourse against our clients for any liabilities arising out of their conduct. We perform these functions as the statutory employer for federal employment tax purposes, since our clients transfer legal control over these payroll functions to us. The laws that govern the payment of salaries, wages and related payroll taxes for our WSEs are complex and the various federal, state and local laws that govern such payments can vary significantly. Based on applicable law in any jurisdiction, we or our client may be held ultimately liable for those obligations if we fail to remit taxes. 
SalesMarket Trends and MarketingDevelopments Affecting Our Business in 2021
Despite the continuation of the COVID-19 pandemic, the U.S. economy saw substantial recovery in 2021 due to the easing of COVID-19 restrictions, consumer demand and continued federal and state legislative efforts to help businesses and employees. We observed the following PEO industry trends in 2021:
SMB Economic Recovery. The U.S. economy saw substantial recovery from the pandemic driven economic downturn in 2020, however the extent of the recovery for SMBs differed based on their industry and geographic region. For example, SMBs in the financial services, technology and professional services industries generally experienced shallower headcount declines in 2020 and have recovered headcount more quickly in 2020 and 2021 as their workforces were better able to transition to remote work. Meanwhile, SMBs in the retail, leisure and hospitality industries generally experienced significant headcount freezes, furloughs and terminations in 2020, and these headcount declines have been slow to recover in 2020 and 2021. Similarly, SMBs in geographic regions that saw significant increases in COVID-19 cases in 2021 from the Delta and Omicron variants have generally experienced more significant economic headwinds.
Continued Insurance Cost Variability and Volatility. The volume of medical claims, including COVID-19 testing, treatment and vaccination costs, increased in 2021, however medical claim volume remained below pre-pandemic levels. Access to medical services and systems remained constrained in 2021, particularly in regions that saw increases in COVID-19 hospitalizations that reduced preventative and elective procedures.
Laws and Regulations. Numerous laws and regulations were created or modified in 2021 that had an impact on our business and the businesses of our clients and SMBs across the country. For example, the PPPFA and ARPA, were passed in 2021 to augment and extend 2020 programs intended to assist SMB’s and their employees to recover from the impacts of COVID-19. The paid leave and corresponding employer tax credit under the FFCRA was modified and extended through the third quarter of 2021, and the employee retention credit program under the CARES Act was also extended and modified before being retroactively terminated effective at end of the third quarter of 2021. Additional provisions of the CCPA became effective in 2021, and the DOL issued regulatory guidance regarding cybersecurity measures applicable to retirement plans. Federal and state views on employees and independent contractors remained in flux during 2021 as we saw a California state court find that Proposition 22, which was a modification of an earlier law that reclassified certain independent contractors as employees, was unconstitutional and unenforceable. The National Labor Relations Board (NLRB) also announced plans to create a new rule for determining whether two business are joint employers or co-employers and is expected to announce this new rule in 2022. We do not believe we are a joint employer, but changes in regulations determining joint employer status could lead to increased legal claims against us or our clients, increase our compliance costs, or require changes to how we operate our business and the services we provide to our clients and WSEs.
For more information regarding the developments above, including the impact of COVID-19 on our business and operations, refer to Part II, Item 7. MD&A in this Form 10-K, and Part I, Item 1A. Risk Factors under the subheading "Risks Related to the COVID-19 Pandemic".
Our Service Development Efforts
We continued to make significant investments in our technology platform with projects intended to provide our users with improved functionality, HR management options, and security. We intend to continue to invest in our technology platform to improve its functionality, ease of use, security and the overall user experience for our clients and WSEs. We believe the continued investment in improving our technology platform will drive operating efficiencies over the long term and improve our client experience.
In 2021, we distributed $86 million to customers under our 2020 Recovery Credit program under which eligible clients received one-time reductions against fees for services. Our Recovery Credit program is designed to promote
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client loyalty, incentivize client retention, and to differentiate TriNet from its peers in the PEO industry and in other competing HR services industries. Similarly, in March 2021, we created our 2021 Credit program, which was designed to return $25 million to eligible customers based on the performance of our health insurance costs for the year.
Throughout 2021 we continued to modify the programs we created in 2020 to support several important funding and payroll tax incentive programs for SMBs created under the FFCRA, CARES Act and PPFA, including PPP, mandatory employee leave requirements, payroll tax deferral and tax credit programs and other employment- and employment tax-related incentives. Changes to these programs in 2021, including guidance from the state and federal agencies managing these programs, required us to create new services, or redesign our existing services, to support these programs for our SMB clients and we expect to continue to make changes to these programs as laws and regulatory guidance change over time.
To engage with our clients and SMBs, we hosted the 2nd annual TriNet PeopleForce conference in the third quarter of 2021, our showcase customer and prospect conference focused on business transformation, agility and innovation for SMBs.
In December 2021, we entered into a definitive agreement to acquire Zenefits, a leading cloud HR platform which provides innovative and intuitive HR, benefits, payroll and employee engagement software purpose-built for SMBs. We believe the acquisition of Zenefits, once completed, will allow us to diversify our product offering to include an Administrative Services Organization (ASO), enabling us to dynamically service SMBs throughout their lifecycle and expand the customers we serve.
Our Clients and Geographies
Our clients are distributed across a variety of industries, including technology, professional services, financial services, life sciences, not-for-profit, property management, retail, manufacturing, and hospitality. We generally support these different clients using our industry-tailored vertical approach. Our clients generally execute annual service contracts with us that automatically renew. In most cases, our clients may cancel these contracts with 30 days' notice to us and we may cancel these contracts with 30 days' notice.
Nearly all of our revenues are generated within the United States and its territories and substantially all our long-lived assets are located in the United States.
Our Competitors
We face competition from:
PEOs that compete directly with us,
HR and information systems departments and personnel of companies that administer employee benefits, payroll and HR for their companies in-house,
providers of certain endpoint HR services, including payroll, employee benefits, business process outsourcers with high-volume transaction and administrative capabilities, and other third-party administrators, and
insurance brokers who allow third-party HR systems to integrate with their technology platform.
Our competitors include large PEOs such as the TotalSource unit of Automatic Data Processing, Inc., the PEO operations of Paychex, Inc. and Insperity, Inc., as well as numerous specialized and smaller PEOs and similar HR service providers with PEO operations.
We believe that our services are attractive to many SMBs in part because of our ability to provide access to a broad range of TriNet-sponsored workers compensation, health insurance and other benefits programs on a cost-effective basis. We compete with insurance brokers and other providers of insurance and benefits coverage, and our offerings must be priced competitively with those provided by these competitors in order for us to attract and retain our clients.
We believe that we also compete based upon the breadth and depth of our benefit plans, vertical market expertise, total cost of service, brand awareness and reputation, ability to innovate and respond to client needs rapidly, access to online and mobile solutions, and subject matter expertise. We believe that we are competitive across these factors. For additional information about our competition, please refer to Part I, Item 1A. Risk Factors, of this Form
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10-K, under the heading – "We must continue to work to improve our services to meet the expectations of our clients and regulators, or we may lose our clients and materially harm our business".
Our Sales Organizationand Marketing Organizations
We sell our solutions primarily through our direct sales organization. We have aligned our sales organization by industry vertical with the goal of growing profitable market share in our targeted industries. This vertical approach deepens our network of relationships and gives us an understanding of the unique HR needs facing SMBs in those industries. Our sales representatives are supported by marketing, lead generation efforts, and referral sources and networks. While the COVID-19 pandemic made it difficult to engage with prospects face-to-face, the use of technology and communication tools created new opportunities for us to engage with customers and prospects virtually.
We typically sponsor and participate in associations and events around the country and utilize these forums to target specific vertical and geographic markets. We responded to the unique challenges posed by the COVID-19 pandemic by shifting between virtual and in-person events. Events include our 2nd Annual TriNet PeopleForce conference, and informational webinars periodically throughout the year on a wide variety of COVID-19 and business topics relevant to our SMB prospects and clients. We also generate sales opportunities within key industry verticals, through marketing alliances and other indirect channels, such as accounting firms, venture capital firms, incubators, insurance brokers, and vertical market industry associations. Additionally, we utilize digital marketing programs, including digital advertising, search and email marketing, to create awareness and interest in our products.
Our Marketing Organizationservices.
Our marketing and corporate communications organization is charged with driving overall brand awareness, managing lead generation, creating and managing our website and other online properties, creating content for all marketing and communication channels including our outbound and inbound marketing efforts, media relations, and managing our sponsorships, major marketing events, and clientinternal and external communications. Prospects changed the way they engaged with us during COVID-19 by using more digital tools like tele-presence and web engagements. In 20192021, we launched numerous digital channels for engagement, including conversational marketing enhancements on our website in response to customers' changing preferences. In 2021, our marketing team also focused on strategic marketing, communications andsocial media, branding initiatives, and crisis communication plans, in part by augmenting our comprehensive company re-brandingbrand campaign, Incredible Starts Here, with our marketing campaign, People Matter, that included omni channel initiatives using social media, and advertising across digital, television, radio and out-of-home media.
LegalThe Laws and RegulatoryRegulations that Affect Our Business
Our business operates in a complex legal and regulatory environment due to a myriad of federal, state and local laws and regulations that impact our business. Below is a summary of what we believe are the most important legal and regulatory issues for our business. For additional information on the impact of these and other laws and regulations on our business and results of operations, refer to Part I, Item 1A. Risk Factors, of this Form 10-K, under the heading - "Legal and Compliance Risks.Risks".
Employer Status
We sponsor our employee benefit plan offerings as the employer of our WSEs under the Internal Revenue Code of 1986, as amended (the Code), ERISA and applicable state law. The multipleterm “employer” has different definitions of “employer”for different purposes under both the Code and ERISA, and for most purposes are not clear and most are defined in part byinterpreted under complex multi-factor tests under common law. We believe that we qualify asare an “employer” of our WSEs in the U.S. under both the Code and the employer of our WSEs in the U.S. for the purposes of ERISA, as well as qualifying as an employer under various state laws, but this status could be subject to challenge by various regulators. For additional information on our employer status and its impact on our business and results of operations, refer to Part I, Item 1A. Risk Factors, of this Form 10-K, under the heading - "If we are not recognized as an employer of worksite employees under federal and state regulations, we and our clients could be adversely impacted.impacted".

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Health Insurance and Health Care Reform
Our sponsored employee health planand welfare offerings are an important component of the products and services that we provide. The future of health care reform continues to evolve in the U.S. For example, the passage of the ACA in 2010 implemented sweeping health care reforms with staggered effective dates from 2010 through 2022, and many provisions in the ACA are still requiresubject to the issuance of additional guidance from the DOL, the IRS, the U.S. Department of Health and Human Services and various U.S. states. Passage of the TCJA in 2017 eliminated the individual mandate tax penalty under the ACA beginning in 2019, while retaining employer ACA mandate obligations. States have developed, and will continue to develop, varying approaches to state-based health exchanges.exchanges and mandates. Further significant changes to health care statutes, regulations and policy at the federal, state and local levels could occur in 20202022 and beyond, including the potential further modification amendment or repealamendment of the ACA, and we may need to adapt the manner in which we conduct our business as a result of any such changes. For additional information on the ACA and its impact on our business and results of operations, refer to Part I, Item 1A. Risk Factors, of this Form 10-K, under the heading - "Changing laws and regulations governing health insurance and other traditional employee benefits at the federal, state and local level could negatively affect our business.business".
Data Privacy and Security Regulations
We collect, , store, use, retain, disclose, transfer and otherwise process a significant amount of confidential, sensitive and personal information from and about our actual and potential clients, WSEs and corporate employees, and we are subject to a variety of federal, state and foreign laws, rules, and regulations in connection with such activities. As a sponsor of employee benefit plans, we also have access to certain protected health information (PHI) of our WSEs and corporate employees. Management of PHI is subject to several regulations at the federal level, including HIPAA and the HITECH Act. HIPAA contains restrictions and health data privacy, security and breach notification requirements with respect to the use and disclosure of PHI. Further, there are penalties and fines for HIPAA violations. Because TriNet sponsored health plans are covered entities under HIPAA, we are required to comply with HIPAA's portability, privacy, and security requirements. We are also subject, among other applicable federal laws, rules and regulations, to the rules and regulations promulgated under the authority of the Federal Trade Commission. The U.S. Congress has considered, but not yet passed, several comprehensive federal data privacy bills over the past few years, such asyears. Additionally, several federal agencies have issued rules, regulations or other forms of guidance that may impact the CONSENT Act, which was intendedprivacy and security obligations that apply to be similar to the landmark 2018 European Union General Data Protection Regulations.our operations. We expect that the federal government’s approach to data privacy laws toand security will continue to evolve.evolve in the coming years.
At the state and local level, there is increased focus on regulating the collection, storage, use, retention, security, disclosure, transfer and other processing of confidential, sensitive and personal information. In recent years, we have seen significant changes to data privacy regulations across the U.S., including the enactment of the California Consumer Privacy Act of 2018 (CCPA), which went into effect in January 2020. The CCPA increases privacy rights for California residents and imposes obligations on companies that process their personal information, including an obligation to provide certain new disclosures to such residents. The CCPA provides for civil penalties for violations, as well as a private right of action for certain data breaches that result in the loss of personal information. This private right of action may increase the likelihood of, and risks associated with, data breach litigation. The CCPA was amended in September 2018 and October 2019, and further amendments may be enacted. In November 2020, California approved the California Privacy Rights Act (CPRA), which creates a new privacy oversight agency and further amends the CCPA to provide additional rights to consumers to access, edit and control the sale and sharing of personal information. The provisions of the CPRA go into effect in January 2023.
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New legislation proposed or

In 2021, two additional states—Virginia and Colorado—enacted comprehensive data privacy laws that will go into effect in Illinois, Massachusetts, New Jersey, New York, Rhode Island, Washington and other2023, while legislatures in several additional states including a proposed right toconsidered data privacy amendment to the Vermont Constitution,laws. These laws impose, or hashave the potential to impose, additional obligations on companies that collect, , store, use, retain, disclose, transfer and otherwise process confidential, sensitive and personal information, and will continue to shape the data privacy environment nationally. In addition,Although there are similarities between the data privacy laws enacted in California, Virginia and Colorado (along with the laws that have been proposed in other states), there are also substantive aspects of the laws that differ markedly. This lack of uniformity, which we expect to continue as other states enact data privacy laws, creates significant legal complexities for companies (such as TriNet) that operate nationwide and are required to comply with a patchwork of privacy laws. Moreover, all 50 U.S. states, the District of Columbia, Guam, Puerto Rico, the Virgin Islands and Canada have enacted data breach notification laws that may require us to notify WSEs, clients, employees, third parties or regulators in the event of unauthorized access to or disclosure of personal or confidential information. Complying with existing and new data privacy and security regulations could cause us to incur substantial costs or require us to change our business practices in a manner adverse to our business. Any failure to comply with existing and new data privacy and security regulations could result in significant penalties, damage our reputation and otherwise have a material adverse effect on our business. For additional information on the privacy and security of the confidential, sensitive and personal information and PHI we possess and the potential impact to our business if we fail to protect such information, refer to each of the risk factors included in Part I, Item 1A. Risk Factors, of this Form 10-K, under the heading - "Data Privacy and Security Risks.Risks".

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BUSINESS


PEO Licensing Laws
Nearly all states have adopted laws and regulations for licensing, registration, certification or recognition of PEOs and the IRS has implemented a voluntary federal licensingcertification program for PEOs. We expect states without such laws and regulations to adopt them in the future. While these laws and regulations can vary widely, most regulators monitor the financial health and other relevant business information of PEOs on an annual or quarterly basis. In some cases, these laws and regulations codify and clarify the co-employment relationship for certain payroll, unemployment, workers' compensation and other employment-related purposes or require specific client contractual terms and/or WSE disclosures. We believe we comply in all material respects with the applicable PEO laws and regulations in each state and jurisdiction in which we operate. For additional information, refer to Part I, Item 1A. Risk Factors, of this Form 10-K, under the heading -
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If we fail to qualify as a co-employer of WSEs under applicable federal and state licensing rules, or if we are deemed to be operating in certain insurance-related industries, we and our clients could be adversely impacted.

Payroll andTaxes, Unemployment Taxes and Payroll Tax Credits
We must also comply with the federal and state payroll tax and unemployment tax requirements that apply where our clients are located. Tax reform efforts, and other payroll tax changes, at the federal, state and local level can impact our payroll tax reporting obligations for our clients and the products and services we can provide. State unemployment tax rates vary by state based, in part, on prior years’ compensation and unemployment claims experience and may also vary based on the overall claims experience of a PEO. As a result, depending on where clients are located, the fees we charge for unemployment taxes can be higher or lower than a client could obtain alone. In some cases, taxing authorities can retroactively increase the unemployment taxes we pay can also be retroactively increased to cover deficiencies in the unemployment tax funds. We also rely on our clients to accurately report their WSEs' work locations and inaccurate reporting, due to work from home policies during the COVID-19 pandemic or otherwise, can impact our payroll tax obligations and the obligations of our clients and WSEs.
We have seen a growing trend, particularly at the federal level, of using payroll tax credits, deferrals and other related payroll tax programs as a mechanism for incentivizing SMB development and/or economic recovery. These programs are popular because they allow SMBs, which often have income tax losses, to realize benefits via payroll tax reductions, rather than income tax reductions. As a result, many of our SMB clients demand that we support these programs. Examples of these programs include the 2015 PATH Act, which allows SMBs to use research and development tax credits submitted on the SMB’s income tax return to reduce payroll taxes, and the CARES Act and FFCRA Act payroll tax credit and payroll tax deferral programs enacted in 2020 and 2021, which allow SMBs to defer certain payroll tax obligations to a later date or to receive payroll tax reductions and refunds based on SMB employment practices that are beyond a PEO’s control. These programs have generally not been designed with the PEO industry in mind and these programs are subject to broad agency interpretations given their complexity. For additional information tax credit programs, and the risks they post to our operations, refer to Part I, Item 1A. Risk Factors, of this Form 10-K, under the heading - "Our business is subject to numerous complex laws, and changes in, uncertainty regarding, or adverse application of these laws could negatively affect our business."
Other Employment Regulations
We must also comply with labor and employment laws, which can change frequently at the federal, state and local level. In particular, regulatory focus on the classification of employers, employees and independent contractors has the potential to significantly change how we and other PEOs operate and the products and services that we and other PEOs can provide to our clients and WSEs. For example, in September 2019, California passed AB5, a law that could potentially reclassify client independent contractors as employees. Similarly,employees by establishing the ABC test to determine if a worker is an employee or independent contractor for most occupations. On September 30, 2021, and effective January 1, 2022, California expanded the number of occupations exempt from the ABC test. In November 2020, California voters passed Proposition 22, which supersedes AB5 for certain types of contractors. On August 20, 2021, a California state court found that portions of Proposition 22 were unconstitutional and further held that the entirety of Proposition 22 was unenforceable. Effective July 1, 2021, Alabama adopted the IRS’s 20-factor test to determine whether a worker is an employee or an independent contractor, while on August 1, 2021, Louisiana started using an 11-factor test under its unemployment law to determine worker classification.
The legal landscape is also in Januaryflux at the federal level. In 2020, the DOL issued a new rule broadeningchanging the definition of joint employer used under the Fair Labor Standards Act (FLSA). which was later rescinded in 2021. The National Labor Relations Board (NLRB) announced plans to create a new rule in 2022 for determining whether two businesses are joint employers under the National Labor Relations Act (NLRA), while the DOL plans to start on a new rule to raise the salary required for the executive, administrative and professional exemptions under the FLSA. We do not believe that we are, or will be, a joint employer under the new DOL rule,FLSA rules, but the impact of new regulations like these could lead to increased legal claims against us or our clients, increase our compliance costs, or require changes to how we operate our business and the products and services we provide to our clients and WSEs. For additional information, refer to Part I, Item 1A. Risk Factors, of this Form 10-K, under the heading - "The definition of employers, employees and independent contractors is evolving. Changes to the laws and regulations that govern what it means to be an employer or an employee may require us to make significant changes in our operations and may negatively affect our business.business".

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Our Human Capital Resources
As of December 31, 2021, we had approximately 364,900 WSEs and 2,800 corporate employees, or colleagues.

Oversight and Management

At TriNet, we rally around a shared vision of improving humanity through business growth and innovation. We recognize the incredible opportunity that can only be realized by working together, with a shared view of how we support our clients and WSEs. This is illustrated in our core values:
Lead with the customer - We are accessible, responsive and empowered to serve our customers. We are successful when our customers are successful.
Stand together - We bring together diverse backgrounds, experiences and ideas to create better outcomes. We collaborate across boundaries, communicate openly and respect each other.
Act with integrity - We are honest, transparent, ethical and fair. We take pride in always doing what’s right for our customers and colleagues.
Make an impact - We act with purpose, are deliberate in our planning and quick in execution. We are accountable to each other and empowered to make decisions.
Be incredible - We invest in the development of our colleagues. We push the boundaries of what's possible, lead the way and innovate to accomplish the extraordinary.

We regularly conduct surveys to seek feedback from our colleagues on a variety of topics, including confidence in company leadership, competitiveness of our compensation and benefits package, career growth opportunities and opportunities to improve the attractiveness of our company with existing and potential colleagues. The results are shared with our colleagues and reviewed by senior leadership, who analyze areas of progress or deterioration and prioritize actions and activities in response to this feedback to drive meaningful improvements in colleague engagement. None of our corporate colleagues are covered by a collective bargaining agreement.

Attracting and Retaining Our Colleagues

We must attract, develop and retain highly motivated and qualified colleagues to continue to provide the services that our clients need, to achieve our strategic objectives, and to grow our business. We do this by:
offering competitive compensation and benefits packages, including comprehensive health benefits and our 401(k) retirement savings plan, with an immediately vested employer match of up to 4% of cash compensation,
supporting a pay for performance culture through the use of cash and equity incentives tied to the performance of our company and individual performance,
offering an employee stock purchase plan that allows our colleagues to purchase our shares at a discount to market value, which fosters a stronger sense of ownership and aligns the interests of our colleagues with our stockholders,
investing in the professional growth of our colleagues with tuition and continuing education reimbursement, wellbeing programs, and comprehensive training and development activities and opportunities both inside and outside of our company,
creating and maintaining a diverse and inclusive colleague base by, for example, the use of colleague-led resource groups and by launching a new diversity and inclusion training curriculum for our colleagues in 2020, and
supporting our colleagues during the COVID-19 pandemic by adopting work-from-home policies, halting non-critical travel, and providing additional paid time off, employee assistance plans, and access to telemedicine services.

We refer to our employees that are co-employed with our clients as our worksite employees (WSE). For more information about how we help our clients manage their own human capital resources and satisfy their own HR-related needs, see the section above titled “Our Services”.
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Our Approach to Acquisitions
Historically, we have pursued acquisitions to both expand our productservice capabilities and supplement our growth across geographies and certain industry verticals. Our acquisition targets have included PEOs and other HR solution providers as well as technology companies or technology product offerings to supplement or enhance our existing HR solutions. In December 2021, we entered into a definitive agreement to acquire Zenefits, a leading cloud HR platform which provides innovative and intuitive HR, benefits, payroll and employee engagement software purpose-built for SMBs. We intend to continue to pursue acquisitions, where appropriate, that will enable us to add new clients and WSEs, expand our presence in certain geographies or industry verticals and offer our clients and WSEs more attractive products and services.
Client Industries and Geographies
The Impact of Seasonality on Our clients are distributed across a variety of industries, including technology, professional services, financial services, life sciences, not-for-profit, property management, retail, manufacturing, and hospitality. Our clients execute annual service contracts with us that automatically renew. Generally, our clients may cancel these contracts with thirty days' notice to us and we may cancel these contracts with thirty days' notice.
Nearly all of our revenues are generated within the United States and its territories and substantially all our long-lived assets are located in the United States.

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BUSINESS


SeasonalityBusiness
Our business is affected by seasonality in client business activity and WSE productbenefit selection, health claims costs and payroll taxes:
Clients generally change their payroll service providers at the beginning of the payroll tax year; as a result, we have historically experienced our highest volumes of new clients and exitingterminating clients in the month of January.
WSEs select our benefit productsplans during their respective open enrollment periods, which occur throughout the year. We have historically experienced the largest proportion of WSE benefit changes in the first quarter and fourth quarters.quarter.
Health claims costcosts tend to increase throughout the year as the utilization of medical services above each WSE's deductible causes our insurance costs to increase. In addition, the overall use of medical services by WSEs, including elective procedures, tends to increase later in the calendar year. During the COVID-19 pandemic, we observed significant fluctuations in the typical seasonal use of medical services by our WSEs. The COVID-19 pandemic and emerging variants may continue to cause variability in our WSE's medical services utilization that may result in changes in this seasonal trend in our business.
Certain payroll tax related billings are based on the WSE's annual taxable wage base up to a set cap. WSEs frequently meet these wage base caps in the first two quarters of the year, depending on the WSE's compensation level, resulting in lower related billing contributions to PSR in the latter half of the year.
Competition

We face competition from:
PEOs that compete directly with us,
HR and information systems departments and personnel of companies that administer employee benefits, payroll and HR for their companies in-house,
providers of certain endpoint HR services, including payroll, employee benefits, business process outsourcers with high-volume transaction and administrative capabilities, and other third-party administrators,
employee benefit exchanges that provide benefits administration services over the Internet to companies that otherwise maintain their own employee benefit plans,
alternative and non-traditional benefit providers, and
insurance brokers who allow third-party HR systems to integrate with their technology platform.

Our competitors include large PEOs such as the TotalSource unit of Automatic Data Processing, Inc., the PEO operations of Paychex, Inc.Owned and Insperity, Inc., as well as specialized and smaller PEOs and similar HR service providers with PEO operations. To the extent that we and other companies providing these services are successful in growing our businesses, we anticipate that future competitors will enter this industry.
We believe that our services are attractive to many SMBs in part because of our ability to provide access to a broad range of TriNet-sponsored workers' compensation, health insurance and other benefits programs on a cost-effective basis. We compete with insurance brokers and other providers of insurance and benefits coverage, and our offerings must be priced competitively with those provided by these competitors in order for us to attract and retain our clients.
We believe that we compete based upon the breadth and depth of our benefit plans, vertical market expertise, total cost of service, brand awareness and reputation, ability to innovate and respond to client needs rapidly, access to online and mobile solutions, and subject matter expertise. We believe that we are competitive across these factors. For additional information about our competition, please refer to Part I, Item 1A. Risk Factors, of this Form 10-K, under the heading - To succeed, we must work to improve our products and services to meet the expectations of our clients and applicable regulations. If we fail to meet those expectations and regulations, we may lose clients and harm our business.
Licensed Intellectual Property
We own or license from third parties various computer software, as well as other intellectual property rights, used in our business. Generally, we protect our intellectual property rights through the use of confidentiality and non-disclosure agreements and policies with our employees and third-party partners and vendors. We also own registered trademarks in the United States, Australia, Canada, the United Kingdom, and the European Union covering our name and other trademarks and logos that we believe are materially important to our operations.

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Corporate Employees
We refergenerally protect our trademarks through federal registration or through the commercial use of our trademarks. Trademark registrations must generally be renewed every five to ten years and we renew the registration of trademarks that we deem to have continuing value to our employees that are not co-employed with our clients as our corporate employees. We had approximately 2,900 corporate employees as of December 31, 2019. Our corporate employees are not covered by a collective bargaining agreement.business.
Corporate and Other Available Information
We were incorporated in 1988 as TriNet Employer Group, Inc., a California corporation. We reincorporated as TriNet Merger Corporation, a Delaware corporation, in 2000 and during that year changed our name to TriNet Group, Inc. Our principal executive office is located at One Park Place, Suite 600, Dublin, CA 94568 and our telephone number is (510) 352-5000. Our website address is www.trinet.com. Information contained in or accessible through our website is not a part of this report.
Our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to those reports are available free of charge at investor.trinet.com as soon as reasonably practicable after we file such material with, or furnish it to, the SEC. Alternatively, the public may access these reports at the SEC's website at www.sec.gov. The contents of these websites are not incorporated into this report and are not part of this report.

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RISK FACTORS


Item 1A. Risk Factors
Below is a discussion of the risks that we believe are significant to our business. These risks are not the only ones we face. We may face additional risks that we do not currently consider to be significant or of which we are not currently aware, and any of these risks could cause our actual results to differ materially from historical or anticipated results. You should carefully consider these risks along with the other information provided in this Annual Report,Form 10-K, including the information in "Management's Discussion and Analysis of Financial Condition and Results of Operations" and our accompanying consolidated financial statements, as well as the information under the heading "Cautionary"Cautionary Note Regarding Forward-Looking Statements" before investing in any of our securities. We may amend, supplement or add to the risk factors described below from time to time in future reports filed with the SEC.
Operational Risks Related to the COVID-19 Pandemic
Our co-employment relationship withThe economic, health and business disruption caused by the COVID-19 pandemic continues to impact our worksite employees exposes usbusiness and could result in a material adverse effect on our business, results of operation and financial condition.
The COVID-19 pandemic has resulted in an economic slowdown and, while there have been signs of economic recovery in 2021, the pandemic continues to disrupt our business risks.
We areand the co-employerbusinesses of our WSEs. As the co-employer of our WSEs, we assume certain risks and obligations of an employer. For instance, we face the risk of providing access to health benefits to our WSEs even if the cost of providing benefits exceeds the fees received from ourSMB clients. The extent of our responsibility for other aspects of our co-employer relationship with our WSEs remains subject to regulatory uncertainty at the federal, state and local levels. For example, under certain circumstances, we may be found to be responsible for paying salaries, wages and related payroll taxes of our WSEs, even if our clients have not timely remitted payments to us.
Our WSEs work in our clients' workplaces. Our ability to control the workplace environment of our clients is limited. As a co-employer of WSEs, we may be subject to liability for violations of labor and employment laws, workers' compensation laws, industry-specific laws that apply to the businesses our clients operate, and other laws that apply to our clients or to employers generally. We may also be liable for acts and omissions by our clients or WSEs, even if we do not violate such laws or participate in such acts or omissions. Federal and state positions regarding co-employment relationships can change, and have frequently changed in the past, with varying degrees of impact on our operations. We cannot predict when changes will occur or forecast whethercontrol all of these disruptions, and any particular future changes will be favorable or unfavorable to our operations. Any such changes could reduce or eliminate the attractiveness of using a PEO and/or significantly increase our compliance costs and the cost to provide our products or services, which could result indisruptions may have a material adverse effect on our financial condition and results of operations.
We seek to mitigate these risks through agreements and insurance coverage and by requiring certain clients to pre-fund certain obligations. Our agreements with our clients divide responsibilities between us and our clients and provide that our clients will indemnify us for any liability attributable to their own or our WSEs' conduct. However, we may not be able to effectively enforce or collect on these obligations. In addition, we maintain insurance coverage, including workers’ compensation and EPLI coverage, to limit our and our clients' exposure to various WSE-related claims, but subject to split by contract, we are still responsible for any deductible layer under such insurance and such insurance generally excludes coverage for claims relating to the classification of employees as exempt or non-exempt, other wage and hour issues, and employment contract disputes. We cannot assure you that our insurance will be sufficient in amount or scope to cover all claims that may be asserted against us and for which we are unable to obtain indemnification from our clients.
Negative publicity relating to events or activities attributed to us or our corporate employees as a resultAny of the actions of our customers and WSEs, or others associated with them, whether or not justified, may tarnish our reputation and reduce the value of our brand. In addition, if our brand is negatively impacted, it mayCOVID-19 related risks below could have a material adverse effect on our business, including creating challenges in retaining clientsresults of operations or attractingfinancial condition. We cannot predict the duration and scope of the pandemic (including the emergence of new variants), the impact of the pandemic on the national and global economy, the duration of the economic downturn, government response to the pandemic and our ability to support laws and programs intended to help SMBs, and whether our clients' businesses will contract or fail due to the pandemic. Any of these factors could exacerbate the risks and uncertainties identified below.
Actual and potential impact on clients and hiringprospects
The change in the economic environment due to the COVID-19 pandemic has had, and retainingmay continue to have, an adverse economic impact on our clients and potential clients. We have seen, and expect to continue to see, affected businesses freeze headcount, furlough and terminate employees, and partially or completely shut down business operations. Impacted businesses have faced and we expect many will continue to face liquidity issues, reduced budgets, or an inability to pay for our services or the same level of our services. For example, in the second quarter of 2020, our new sales growth declined and we experienced higher WSE attrition than prior periods. See the risk factor titled “Our clients are particularly affected by volatility in the financial and economic environment, which could harm our business” below for more details.
Actual and potential impact on insurance costs
The COVID-19 pandemic has changed how and when our WSEs incur health expenses. We have experienced and expect to continue to experience higher than normal volatility and variability in the amounts that we pay for group health insurance expenses incurred by WSEs within our deductible layer under our risk-based health insurance policies.
For example, during the third quarter of 2021, we saw increased constraints on access to medical services and systems, particularly in regions that saw increases in COVID-19 hospitalizations. These constraints reduced preventative and elective procedures, resulting in a decrease in our MCT, defined as changes in participant use of services, including the introduction of new treatment options, changes in treatment guidelines and mandates, and changes in the mix, unit cost and timing of services provided to plan participants. This decrease resulted in a lower than normal Insurance Cost Ratio during that period.
It is difficult to predict the rate at which the use of medical services will change as new variants emerge and individual, provider network and government reactions to those variants change. COVID-19 testing, treatment and vaccination costs also make it more difficult to predict future health claims costs, and actual claims patterns and cost trends may differ significantly from our historical experience. Because we assume the risk of variability in future health claims costs for our enrollees under our risk-based health insurance policies, this unpredictability could result in higher-than-expected insurance costs, which could have a material adverse effect on our business, results of operations and financial condition.
As we set our benefit services fees for health and welfare benefits in advance for a fixed benefit period, if actual MCT exceeds our projections, this would result in a higher Insurance Cost Ratio, which could have a material adverse effect on our business, results of operations and financial condition. For details on how the volume and
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RISK FACTORS

severity of insurance claims and MCT impact our insurance costs, refer to Critical Accounting Judgments and Estimates in Part II, Item 7. MD&A and the risk factor titled “Unexpected changes in workers’ compensation and health insurance costs and claims by worksite employees could harm our business” below.
In response to COVID-19, many states have adopted standards intended to extend workers’ compensation coverage to claims based on a diagnosis of COVID-19. Most states have focused on providing coverage for first responders, frontline healthcare workers and other essential workers. We are responsible for the deductible layer under our workers’ compensation policies, and our insurance costs are affected by our WSEs' workers’ compensation insurance claims experience. Any law or legal standard that increases the number of covered workers’ compensation claims under our insurance policies could have a material adverse effect on our insurance costs and financial condition. See the risk factor titled “Unexpected changes in workers’ compensation and health insurance costs and claims by worksite employees could harm our business” below for more details.
Actual and potential impact of the laws affecting our industry and clients
New laws and programs have been enacted, and may continue to be enacted, at every level of government to help the economy, employers and employees. For example, the 2020 FFCRA and CARES Act and the 2021 PPPFA and ARPA, and subsequent agency guidance related to those acts, created the paycheck protection program (PPP), mandatory employee leave requirements, payroll tax deferral and tax credit programs, COBRA premium assistance facilitated via employer payroll tax credits, and other employment- and employment tax-related incentives. SMBs must rely on PEOs to help take advantage of these programs, and new and amended laws adding programs or changing existing programs may be passed at the federal, state, and local level at any time.
Most of these laws and programs have not been, and we do not anticipate will be, enacted with the PEO industry in mind. As a result, we cannot guarantee we will be able to support any of these laws and programs in a timely and cost effective manner or at all, which could reduce or eliminate the attractiveness of our services and/or affect the ability of our clients and WSEs to fully realize the benefits of these laws and programs, which would have a material adverse effect on our business, financial condition and results of operations. See the risk factor titled “Our business is subject to numerous complex laws, and changes in, uncertainty regarding, or adverse application of these laws could negatively affect our business” below for more details.
Operational Risks
Unexpected changes in workers' compensation and health insurance costs and claims by worksite employees could harm our business.
Our insurance costs, which make upcomprise a significant portion of our overall costs, are significantly affected by our WSEs’ health and workers' compensation insurance claims experience. Our fully insured insurance plans are provided by third-party insurance carriers under risk-based or under guaranteed-cost insurance policies. Refer to Note 1 in Part II, Item 8. Financial Statements and Supplementary Data, of this Form 10-K for further discussion of these policies.

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Under our risk-based health insurance policies, we assume the risk of variability in future health claims costs for our enrollees. We have experienced variability, and may experience variability in the future, in the amounts that we are required to pay for group health insurance expenses incurred by WSEs within our deductible layer under these risk-based policies, based on changing trends in the volume and severity of medical and pharmaceutical claims. This variability arises from changes to the components of medical cost trend (MCT), defined as changes in participant use of services, the introduction of new treatment options, changes in treatment guidelines and mandates, and changes in the mix and unit cost of services provided to plan participants.MCT. These trends change, and other seasonal trends and variability may develop, which makes it difficult for us to predict this aspect of our business and which mayour failure to accurately predict these trends could have a material adverse effect on our business.business, financial condition and results of operations.
Under our fully insuredfully-insured workers' compensation insurance policies, we assume the risk for losses up to $1 million per claim occurrence (deductible layer). Refer to Note 1 in Part II, Item 8. Financial Statements and Supplementary Data, of this Form 10-K for further discussion of these policies. The ultimate cost of the workers’ compensation services provided will not be known until all the claims are settled. If we do not accurately predict the risks that we assume, we may not charge adequate fees to cover our costs, which could reduce our net income and result in a material adverse effect on our business. Our ability to predict these costs is limited by unexpected increases in frequency or severity of claims, which can vary due to changes in the cost of treatments or claim settlements.
We accrue for the estimated future costs of reimbursing our workers' compensation and health insurance carriers under our insurance policies, using external actuaries and our own experience to develop the estimates, but the volume and severity of claims activity is inherently unpredictable. Estimating these accrued costs requires us to consider a number of factors and requires significant judgment.judgment and if our estimates are wrong, that could result in a material adverse effect on our business, financial condition and results of operations.
In addition, we accrue for estimated future costs of reimbursing our workers' compensation and health insurance carriers under our insurance policies, using external actuaries and our own experience to develop the estimates. Estimating these accrued costs requires us to consider a number of factors and requires significant judgment.
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If we subsequently receive updated information indicating that the volume and severity of insurance claims were higher or lower than previously estimated and reported, our insurance costs could be higher or lower, respectively, in that period or subsequent periods as we adjust our accrued costs accordingly, which could have a material adverse effect on our business.business, financial condition and results of operations. We have experienced both favorable and unfavorable insurance cost variability due to claims activity in the past and could have similar or worse experiences in the future. Refer to Critical Accounting Judgments and Estimates in Part II, Item 7. MD&A, of this Form 10-K for further discussion of these estimates.
Our co-employment relationship with our worksite employees exposes us to unique business risks.
We are the co-employer of our WSEs. As the co-employer of our WSEs, we assume some of the risks and obligations of an employer. For instance, we may need to provide access to health benefits to our WSEs even if the cost of providing benefits exceeds the service fees received from our clients. The extent of our responsibility for other aspects of our co-employer relationship with our WSEs remains subject to regulatory uncertainty at the federal, state and local levels. For example, under certain circumstances, we may be responsible for paying salaries, wages and related payroll taxes of our WSEs, even if our clients have not timely remitted payments to us.
Our WSEs work in our clients' workplaces. Our ability to control the workplace environment of our clients is limited. Yet, we may be subject to liability for violations of labor and employment laws, workers' compensation laws, industry-specific laws that apply to the businesses our clients operate, and other laws that apply to our clients or to employers generally. We may also be liable for acts, omissions or violations by our clients or WSEs, even if we do not participate in such acts, omissions or violations.
We seek to mitigate these risks through agreements and insurance coverage and by requiring certain clients to pre-fund certain obligations. Our agreements with our clients divide responsibilities between us and our clients and provide that our clients will indemnify us for any liability attributable to their own or our WSEs' conduct. However, we may not be able to effectively enforce or collect on these obligations. In addition, we maintain insurance coverage, including workers’ compensation and EPLI coverage, to limit our and our clients' exposure to various WSE-related claims. Subject to split by contract, we are still responsible for any deductible layer under such insurance and such insurance generally excludes coverage for claims relating to the classification of employees as exempt or non-exempt, other wage and hour issues, and employment contract disputes. We cannot assure you that our insurance will be sufficient in amount or scope to cover all claims that may be asserted against us and for which we are unable to obtain indemnification from our clients.
Negative publicity relating to events or activities attributed to us or our corporate employees as a result of the actions of our clients and WSEs, or others associated with them, whether or not justified, may tarnish our reputation and reduce the value of our brand. In addition, if our brand is negatively impacted, it may have a material adverse effect on our business, including creating challenges in retaining clients or attracting new clients and hiring and retaining employees. 
In addition, federal and state positions regarding co-employment relationships can change, and have frequently changed in the past, with varying degrees of impact on our operations. We cannot predict when changes will occur or forecast whether any particular future changes will be favorable or unfavorable to our operations. Any such changes could increase our potential liability for the risks outlined above, or otherwise reduce or eliminate the attractiveness of using a PEO, or significantly increase our compliance costs and the cost to provide our services, which could result in a material adverse effect on our financial condition and results of operations.
Our SMB clients are particularly affected by volatility in the financial and economic environment, which could harm our business.environment.
Our clients are small and mid-sizedmedium-size businesses that we believe can beare particularly susceptible to changes in the level of overall economic activity in the markets in which wethey operate. These businesses are often exposed to credit and cash liquidity risks that larger businesses may be able to avoid, and during periods of weak economic conditions, small business failures tend to increase and employment levels tend to decrease. During these periods, our clients have in the past and may in the future reduce employee headcount, compensation and/or benefits levels, which could negatively affect our revenues and margins if we are unable to reduce our operating expenses sufficiently or quickly enough.
Weak economic forecasts or conditions During these periods, we have also seen in the past and mayexpect to see during such periods in the future, also affect the willingness ofclients terminating our services and/or fewer new clients.When our clients and potential clients to pay outside vendors for services like ours, and may impactleave us or reduce their ability to pay their obligations to us on time, or at all. During such periods,headcount, we are also likely to see an increaseincreases in unemployment and related COBRA claims and employment-related costs from our clients and WSEs andthat we may be legally or practically unable to recover these costs or increasebased on the fees established in our client service agreements.
We lose clients for many reasons that we chargecannot control or easily predict and, generally, our customersclients sign service agreements that they can cancel on short notice.
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Our standard client service agreement can generally be canceled by our clients (or us) with 30 days’ prior written notice. We regularly experience client attrition and decreases in these situations.new client sales due to a variety of factors that are difficult for us to control or predict, including the overall national economic conditions, client mergers and acquisitions, increases in our administrative and benefit services fees, client business failure and liquidity issues, the effects of competition, and client decisions to administer HR in-house or via a non-PEO solution. If we were to experience WSE or client attrition for any of the above reasons in excess of historic or expected rates, or if we incorrectly estimate the impact of the above factors on WSE or client attrition rates, it could have a material adverse effect on our business, financial condition and results of operations.
Geographic and industry market concentration makes our results of operations vulnerable to regional and industry-specific economic and health factors.
Our top five markets, California, New York, Florida, Texas and Georgia, accounted for approximately 60% in aggregate of our paid WSEs for the year ended December 31, 2021. If any of those geographic regions suffers a downturn, even if the economy at the national level remains strong, or experience higher than expected medical services utilization, due to regional health issues, including as a result of the COVID-19 pandemic, the portion of our business attributable to clients in that region could be adversely affected, which could have a material adverse effect on our financial condition or results of operations.
In addition, most of our clients are concentrated in certain geographic regions and operate in a relatively small number of industries, including the technology, professional services, financial services, life sciences not-for-profit, professional services and financial servicesnot-for-profit industries. As a result, if any of those geographic regions or specific industries suffers a downturn, even if the economy at the national level remains strong, the portion of our business attributable to clients in that region or industry could be adversely affected, which could have a material adverse effect on our business, financial condition or results of operations.

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Any failure in our business systems, or in any third-party business systems or service provider that we rely upon, could reduce the quality of our business services, harm our reputation and expose us to liability.
Our business is highly dependent on in-house and third-party data processing centers and systems that rely on the complex integration of numerous hardware and software subsystems to manage on a daily basis, a large volume of daily client and WSE transactions, including the processing of employee, payroll and benefits data. In addition, weWe also rely on third-party systems to provide services for our clients and WSEs, including insurance carrier networks and databases that manage the benefits provided to, and claims made by, our clients and WSEs and electronic banking systems and payroll tax systems that transmit payments and data to clients, WSEs and taxing agencies. These centers and systems have been, and could be disrupted by among other things, equipment failures, computer server or systems failures, network outages, malicious acts, software errors or defects, vendor performance problems, power failures, natural disasters, terrorist actions or similar events. We have also experienced office closures on the East Coast on multiple occasions over the past few years due to hurricane threats, and in California due to increased wildfire threats in the state. Our offices and data processing centers in these and other locations will continue to face the risk of closure or damage in the future due to climate change.
Any delay or failure in our business continuity response to these events, or in the response of our third-party service providers, even if only for a short period of time, can have a significant impact on our clients and WSEs. This could cause clients to leave us, result in reduced revenues, increase our liability to our clients and WSEs, any of which could result in a materially adverse effect on our reputation and business.
We also rely on enterprise software applications licensed from third parties that are updated from time to time. Any failure of these systems for any reason could delay or prevent us from providing services to our clients, which would have a material adverse effect on our business and results of operations.
Our client recovery programs have significant costs. These costs will not be recovered if these programs fail to achieve the business goals for which they are designed, which could result in a material adverse effect on our business, results of operation and/or financial condition.
In response to the COVID-19 pandemic, we created several programs to assist in the economic recovery of our existing SMB clients and enhance our ability to retain these clients. These programs are designed to promote client loyalty, incentivize client retention, and to differentiate TriNet from its peers in the PEO industry and in other competing HR services industries. However, these programs are also associated with significant costs, and we cannot guarantee that we will recover these costs, or achieve our intended client loyalty, retention and product differentiation goals from these programs.
In April 2020, we created our Recovery Credit program. Eligible clients received one-time reductions against fees for future services, accounted for as a discount, to be received over the following 12 months. As a result of the Recovery Credit, we reduced our total revenues by $128 million in 2020 and $17 million in 2021.
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If any of these programs, or any of our future client recovery programs, fails to generate the business impact for which they are designed, for any reason, our financial performance will be negatively affected, which could result in a material adverse effect on our business, financial condition and results of operations. For more details on our Recovery Credit program and 2021 Credit Program, refer to Note 1 in Part II, Item 8. Financial Statements and Supplemental Data, in this Form 10-K.
Adverse changes in our insurance coverage, or in our relationships with key insurance carriers, could harm our business.
Our success depends in part on our ability to maintain competitive health and workers' compensation coverage options and insurance rates through well-known insurance carriers. If we are unable to maintain competitive insurance rates or obtain popular and desirable coverage plans through well-known insurance carriers, it could affect our ability to attract and retain clients, which could have a material adverse effect on our business. Where we sponsor insurance coverage and we are not responsible for any deductibles, our carriers set the fixed cost of the plan, which may lead to uncompetitive fees. Even where we sponsor insurance under which we are responsible for deductibles, we may not be able to control our costs in a way that would make our fees competitive.
In addition, broad adoption of our services in certain geographic regions or industries may make it more difficult for us to obtain competitive health and/or workers' compensation insurance rates due to concentration of clients within a particular region or industry. For example, we have significant concentrations of clients in California, New York, Florida, Texas and Georgia, which account for approximately 60% in aggregate of our paid WSEs for the year ended December 31, 2021. The loss of any one or more of our key insurance vendors in these areas, or our inability to partner with certain vendors that are better-known or more desirable to our clients or potential clients, could have a material adverse effect on our financial condition and results of operations.
Clients may terminate our services based on a variety of factors, many of which are difficult for usWe must continue to control, which can negatively impact our business.
We regularly experience client attrition due to a variety of factors that are difficult for us to control or predict, including cost pressures, client merger and acquisition activity, reactions to any proposed increases in administrative and insurance service fees by us, client business failure, effects of competition, and client decisions to bring their HR administration in-house. Our standard client service agreement can generally be canceled by us or by the client without penalty with 30 days’ prior written notice. If we were to experience client attrition in excess of our historic annual attrition rate, it could have a material adverse effect on our business, financial condition and results of operations.
To succeed, we must work to improve our products and services to meet the expectations of our clients and applicable regulations. If we fail to meet those expectations and regulations,regulators, or we may lose our clients and materially harm our business.
In order to attract and retain clients, we believe that we must compete in our industry effectively on the basis of the value proposition that we deliver to our clients, including customerclient experience and satisfaction, relevance and pricecost-effectiveness of our benefit plans, vertical market expertise, total price of service, brand awareness and reputation, ability to innovate and respond to customerclient needs rapidly, access to online and mobile solutions, and human resources subject matter expertise. The expectations of our clients and prospective clients in these areas change over time as a result of many factors outside of our control, such as competition, regulatory and technical changes, and changing trends in the demands employees place on SMB employers. IfRegulatory changes may also mandate that we are unablemake changes to satisfy the evolving product and service delivery expectations of our clients and WSEs, then we could experience lower client satisfaction, lower rates for on-boarding new clients and higher client attrition, which could have a material adverse effect on our business.

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services or benefit offerings.
To satisfy the productclient expectations and service delivery expectations of our clients and regulators,regulatory requirements, we must also timely and effectively identify, develop, or license theappropriate technologies, we need, and implement those technologiesincorporate them into the solutions that we provide. New productsservices or upgrades may not be released according to schedule, or may contain defects when released. Difficulties with the performance of our new technologies, or our ability to satisfy changes in regulatory requirements, could result in adverse publicity, loss of sales, delay in market acceptance of our services, or client claims against us, any of which could materially harm our business. Even if we are capable of satisfying client expectations in these areas, we may not be able to do so on a cost-effective basis, which could have a material adverse effect on our financial condition and our results of operations. In addition, weWe could lose market share if our competitors develop superior products and services or satisfy client or regulatory demands before we are able to do so. If we are unable to satisfy the evolving product and service expectations and regulatory requirements, then we would experience lower client satisfaction, fewer new clients and higher client attrition, which could have a material adverse effect on our business.
We have acquired, and may in the future acquire, other businesses and technologies, which can divert management's attention and create integration risks and other risks for our business.
We have completed numerous acquisitions of other businesses and technologies, and we expect that we will continue to pursue future acquisitions. On December 23, 2021, we entered into a definitive agreement to acquire YourPeople, Inc. dba Zenefits. Acquisitions, including the potential acquisition of Zenefits, involve numerous other risks, some of which we have experienced in the past and which we may experience in the future, including:
over-valuing and over-paying for businesses and technologies,
increased operating costs and unanticipated costs to successfully integrate the clients, WSEs, operations, systems, technologies, services and personnel of the acquired business,
establishing or maintaining required internal controls, procedures and policies for the acquired business,
diversion of management’s attention from other business concerns,
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litigation resulting from the activities of the acquired business,
insufficient revenues, insurance or seller indemnification to offset increased expenses associated with the acquisitions and unanticipated liabilities of the acquired businesses,
entering markets in which we have no prior experience and may not succeed, and
potential loss of key employees or key clients of the acquired business as a result of the acquisition or integration of the acquired business.
We have experienced increased operating costs to resolve the challenges of prior acquisitions. If we fail to appropriately integrate any acquired business, we may fail to achieve our growth, service enhancement or operational efficiency objectives, and our business, results of operations and financial condition could be harmed.
Our business and operations have undergone and will continue to undergo significant change as we seek to improve our operational effectiveness.effectiveness and the support, services and products that we provide to our clients. If our clients and prospects do not accept these changes, or if we are unable to effectively manage this change, our business and results of operations may suffer.
We have changed our operations and internalclient service processes in recent periods in order to improve our operational effectiveness, and to provide improved client support, services and services. Managing these changesproduct options, and we will continue to require further refinementdo so in the future. For example, in 2020, we adopted a new client service engagement support model, called Connect 360, that we believe will benefit our clients and WSEs by providing them with improved support.. Similarly, in 2021, we launched Financial Services Preferred, and a new product, called IOM, that offers clients the option to receive PEO services from TriNet while also obtaining client-sponsored health benefits from a third-party broker that partners with TriNet. We have adopted robust remote work policies and practices during the COVID-19 pandemic. These policies and practices may make it more difficult to manage and implement certain program, service and product initiatives for our clients and their WSEs. If our clients and prospects do not accept or value these support programs, services and products, and other similar changes we make in the future, we may lose clients, experience reduced onboarding rates, and see increased operational costs, any one of which could have a material adverse effect on our business, financial condition and results of operations.
In addition, managing these operational and process changes typically requires changes our internal operational, financial and management controls and reporting systems and procedures while we simultaneously seek to effectively recruit, integrate, train and motivate new corporate employees, retain our existing corporate employees, maintain the beneficial aspects of our corporate culture, effectively execute our business plan, satisfy the requirements of our existing clients, acquire new clients, and enhance the quality and scope of our services. These activities willalso require significant operating and capital expenditures and allocation of valuable management and employee resources, which we expect will continue to place significant demands on our management and on our operational and financial infrastructure.resources. If we fail to manage these operational and process changes effectively, our costs and expenses may increase more than we expect and our business, financial condition and results of operations may be harmed.

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If we are unable to attract, maintain and manage qualified personnel, including our sales force, our business may be harmed.
Our ability to provide the products and services that our clients need, satisfy our strategic objectives and grow depends in part on our abilityTo succeed, we must be able to attract and retain highly motivated and qualified personnel. Competition for skilled employees is intense and, if we are unable to attract and retain suchthe personnel we need, our business may suffer. In addition,For example, like many businesses we have invested significant timeexperienced higher than normal rates of employee turn-over during the COVID-19 pandemic and resources into developing a corporate culture that we believe will help us provide improved products and services and increase client satisfaction with our services. If we are unable to attract and retain the personnel needed to support and further develop our corporate culture, our business may not grow at the rate that we anticipate, which couldrelated "great resignation".
We have a material adverse effect on our financial condition and results of operations. For example, we havealso experienced elevated sales force attrition in the past and may experience it in the future, experience, elevated sales force attrition asfor a resultvariety of our changereasons, including due to changes in industry or client focus, compensation structure, changes, third-party competition for sales talent and other factors. Newly hired sales personnel are typically not productive for some period of time following their hiring, which results in increased near-term costs to us relative to their actual sales contributions during this period. If we are unable to effectively train and maintain an adequately seasoned sales force, our revenues likely will not increase at the rate that we anticipate, which could have a material adverse effect on our business, financial condition and results of operations.
Similarly, we rely on qualified personnel to properly manage and maintain our internal control processes, including internal control over financial reporting. Our internal control environment involves a significant number of manual procedures. If we are unable to effectively train and maintain qualified personnel to manage and operate these procedures, it is possible that our internal controls may not remain effective, which could negatively affect the market price and trading liquidity of our common stock, cause investors to lose confidence in our reported financial information, subject us to civil and criminal investigations and penalties, and generally materially and adversely impact our business and financial condition.
Our industry is competitive, which may limit our ability to maintain or increase our market share or improve our results of operations.
We face significant competition on a national and regional level from other PEOs, as well as other existing, and potential, companies and industries that service, or may in the future service, client HR needs. Refer to the heading “Competition”"Competition" under Part I, Item 1. Business, above for more details. Our competitors, regardless of industry, may have greater marketing and financial resources than we have, and may be better positioned than we are in certain markets. Increased competition in our industry could result in price reductions or loss of market share, any of which could harm our business. We expect that we will continue to experience competitive pricing pressure.
Moreover, we may not be successful in convincing potential clients that the use of our services is a superior, cost-effective means of satisfying their HR obligations relative to the way in which they currently satisfy these obligations either by themselves or by using the services of our competitors. If we cannot compete effectively against other PEOs or against the alternative means by which companies meet their HR obligations, or if we are unable to convince clients or potential clients of the advantages of our offerings, our market share and business may suffer, resulting in a material, adverse effect on our financial condition and results of operations.
Data Privacy and Security Risks
Cyber-attacks or other security-related incidents could result in reduced revenue, increased costs, liability claims, regulatory penalties, and damage to our reputation.
We and our third-party service providers and subcontractors collect, store, use, retain, disclose, transfer and otherwise process a significant amount of confidential, sensitive and personal information from and about our actual and potential clients, WSEs and corporate employees, including bank account and social security numbers, tax information, certain medical information,PHI, certain health claim information, PHI, retirement account information, and payroll data. Maintaining the security of our infrastructure and the confidentiality of the confidential, sensitive and personalthis information ofis critically important to our clients, WSEs and corporate employees is critical as the clients, WSEs and corporate employees using our technology platform and services rely on our security infrastructure to protect their confidential, sensitive and personal information. In providing our services, we also rely on third-party service providers, such as insurance carriers and banks, who also have access to confidential, sensitive and personal information about our clients, WSEs and corporate employees. Some of those service providers in turn subcontract with other service providers.

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Due to the size and complexity of our technology platform and services, the amount of confidential, sensitive and personal information that we store and the number of clients, WSEs, corporate employees and service providers with access to confidential, sensitive and personalthis information, we and our service providers are potentially vulnerable to a variety of intentional and inadvertent cyber-attacks and other security-related incidents and threats, which could result in a disclosure of information and a material adverse effect on our business. The occurrence of any actual or attempted cyber-attack or other security-related incident, the reporting of such an incident, whether accurate or not, or our failure to make adequate or timely disclosures to the public or law enforcement agencies following any such event, whether due to delayed discovery or a failure to follow existing protocols, could result in significant fines, penalties, orders, sanctions and proceedings or actions against us or our service providers by governmental bodies and other regulatory authorities, clients or third parties, which could in turn result in a material adverse effect on our financial condition and results of operations. Any such fines, penalties, order, sanctions, proceedings or actions, and any related indemnification obligation, could damage our reputation, force us to incur significant expenses in defense of these proceedings or to pay fines and penalties, distract our management, increase our costs of doing business or result in the imposition of financial liability.threats.
Threats to our information technology systems and data securityCybersecurity threats can take a variety of forms. Hackers may develop and deploy viruses, worms and other malicious software programs that attack our networks and data centers or those of our service providers. Other malicious actors may direct social engineering, phishing, credential stuffing, ransomware, denial or degradation of service attacks and similar types of attacks against any or all of us, our clients and our service providers. Other threats include inadvertent security breaches or theft, misuse or unauthorized access or other improper actions by our employees, clients, WSEs, service providers and other business partners. Cyber-attacks and other security-related incidents are increasing in frequency and evolving in nature. Given the unpredictability
Any actual or attempted cyber-attack or other security-related incident could have a material adverse effect on our business, reputation, financial condition or results of operation. Any actual or attempted breach or disclosure of the timing, nature and scope of cyber-attacks and other security-related incidents, there can be no assurance that any security procedures and controls that we or our service providers have implemented will be sufficient to prevent such incidents from occurring. Furthermore, because the methods of attack and deception change frequently, are increasingly complex and sophisticated, and can originate from a wide variety of sources, including third parties such as service providers and even nation-state actors, it is possible that we may not be able to anticipate, detect, appropriately react and respond to, or implement effective preventative measures against, all cyber-attacks and other security-related incidents. As a result, disclosure of confidential, sensitive and personal information that we possess about our clients and WSE could occur due to the occurrence of such attacks of incidents, which could materially and adversely affecthave a material adverse effect on our business, reputation, financial condition or results of operations. Public perception of, or even inaccurate or unfounded rumors of, any such attacks, incidents, breaches or disclosures, could have a material adverse effect on our business, reputation, financial condition or results of operation.
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Any such attacks, incidents, breaches or disclosures could result in material financial liability by
resulting in material fines, penalties, orders, sanctions and proceedings or actions against us or our service providers by regulatory authorities, clients and other third parties,
requiring us to indemnify clients and other third parties,
damaging our reputation,
forcing us to incur significant expenses to defend our actions and practices,
delaying product and service development plans,
resulting in unrelated compliance breaches as a result of system failures or management distraction, and
increasing our costs of doing business.
TriNet does not need to be the target of such attacks, incidents, breaches and disclosures for them to have a material adverse effect on our operations. For example, a cybersecurity attack on a key third-party software service provider could disrupt our services or compromise client data entrusted to that service provider. In December 2021, a third party reported a security vulnerability in a commonly used Java-based application that TriNet also uses called “Log4j”. After review, our security team determine that no security compromise had occurred within TriNet’s systems, but this is no guarantee that a vulnerability identified in any other third-party software would not result in a security compromise. Similarly, a security incident involving a client could result in access to TriNet’s systems. Any of these incidents, even if not initially directed at TriNet, could also have a material adverse effect on our business operations, result in liability, fines and penalties or other regulatory sanctions, a loss of confidence in our ability to provide our services, and/or harm our reputation and relationships with current or potential clients.
We, our clients and our service providers have been the victims of these types of threats, attacks and security breaches in the past. No security measures, procedures, technology or amount of preparation can provide guaranteed protection from these threats,past, and we, our clients and our service providers expect to be victims again in the future. Cyber-attacks have disrupted, or resulted in unauthorized access to, our networks, applications, bank accounts, and confidential, sensitive and personal information, or those of our clients or WSEs or service providers, in the past and successful attacks may occur again in the future. We, our service providers and our clients have experienced other security incidents in the past that led to disclosure of the confidential, sensitive or personal information we possess and we and they could experience such incidents in the future. In addition,As a result of these incidents, we have in the past been,reported, and mayexpect to report in the future, be, required to report data breaches to regulators, affected individuals, clients and other third parties. While we do not believe that any such past events resulted in material expenditures or a material loss of confidential, sensitive or personal information, we cannot guarantee that any future events will not have a material impact on our operations.
Any cyber-attack, unauthorized intrusion, insider theft, malicious software infiltration, network disruption, denial of service or other data security incident could result in disruption to our clients' or service providers' systems and services, product development delays, compliance breaches, and the disclosure or misuse of confidential, sensitive and personal information. This could have a material adverse effect on our business operations, result in liability, fines and penalties or other regulatory sanctions, a loss of confidence in our ability to provide our services, and/or harm our reputation and relationships with current or potential clients. We may be required to expend significant capital and other resources to protect against, respond to, and recover from any potential, attempted, or existing cyber-attacks or other security-related incidents and their consequences. The costs of identifying and remediating any threat, attack, breach, or disclosure, and the costs associated with responding to litigation or regulatory investigations, could also have a material adverse effect on our business and reduce our operating margins. Although we maintain insurance coverage, the amount of our insurance may not cover the costs associated with any security incident, and we cannot be certain that cyber insurance will continue to be available to us on economically reasonable terms, or at all, or that any insurer will not deny coverage as to any future claim. Any publicized security incident, or even public rumors about a security incident, affecting our businesses and/or those of our service providers may also have a similarly material adverse effect on our business or reputation. Moreover, there could be public announcements regarding any security-related incidents and any steps we take to respond to or remediate such incidents, if securities analysts or investors perceive these announcements to be negative, could have a material adverse effect on the price of our common stock.

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Our efforts to protect against and to remediate cyber-attacks, other security-related incidents, and data breaches may not succeed and any such event, whether intentional or inadvertent and whether attributable to us or our service providers, could have a material adverse effect on our business, reputation and the price of our common stock.
We have implemented policy, procedural, technical, physical, and administrative controls with the aim of protecting our networks, applications, bank accounts, and the confidential, sensitive and personal information entrusted to us, including bank account and social security numbers, tax information, certain medical information, certain health claim information, PHI, retirement account information, and payroll data and other PHI, from cyber-attacks and other security-related incidents. While we, and our service providers, have security measures and programs in place to prevent, detect, and respond to cyber-attacks, security-related incidents, data breaches and other similar threats, these security measures and programs and our collective efforts may not always succeed. Despite our efforts and those of our service providers, we cannot fully eliminate the possibility of such cyber-attacks, security-related incidents and other threats, whether intentional or inadvertent and whether internal or external and we, our clients or our service providers may not discover a security incident for a significant period of time after the incident occurs.
In some cases, we perform risk assessments of our service providers or require them to undertake security measures through contract provisions. However, we do not control our service providers and our ability to monitor their data security is limited, so we cannot ensure the security measures they take will be sufficient to protect our confidential, sensitive and personal information. Due to applicable laws and regulations or contractual obligations, we may be held responsible for any cyber-attack or other security-related incident attributed to our service providers regarding the information we share with them and any contractual protections we may have from our service providers may not be sufficient to adequately protect us from any such liabilities and losses.
We have invested, and plan to continue investing, in resources to protect our information security ecosystem against cyber-attacks, other security-related incidents, and data breaches and to investigate and remediate any information security vulnerabilities. However, the security protections and strategies that we implement, and the investigation and remediation efforts we undertake, may not be successful. Any security breach, whether intentional or inadvertent, could result in the access, public disclosure, loss or theft of our clients', WSEs' and corporate employees’ confidential, sensitive and personal information, which could negatively affect our ability to attract new clients, cause existing clients to terminate their agreements with us, result in significant reputational damage and subject us to significant lawsuits, regulatory fines, or other actions or liabilities, any of which could materially and adversely affect our business and operating results.
We must comply with constantly evolving, data privacy and security laws and regulations, which may require substantial costs or changes to our business, and any actual or perceived compliance failure could result in reduced revenue, increased costs, liability claims, regulatory penalties, and damage to our reputation.
We are subject to various federal, state and local laws, rules, and regulations, as well as contractual obligations, relating to the collection, storage, use, retention, security, disclosure, transfer and other processing of confidential, sensitive and personal information. Existing laws and regulations are constantly evolving, and new laws and regulations that apply to our business are being introduced at every level of government inside and outside of the United States. For example, all 50 U.S. states, the District of Columbia, Guam, Puerto Rico, the Virgin Islands and Canada have enacted data breach notification laws that may require us to notify WSEs, clients, corporate employees, or other third parties and regulators in the event of unauthorized access to or disclosure of confidential, sensitive or personal information experienced by us or our service providers.
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In addition to breach notification laws, we have seen increased focus at every level of government inside and outside of the United States on regulating the collection, store,storage, use, retention, security, disclosure, transfer and other processing of confidential, sensitive and personal information. For example, in recent years, many states have proposed or enacted new laws or amended existing laws. Certain state laws, including the CCPA and CPRA, may be more stringent or broader in scope, or offer greater individual rights, with respect to confidential, sensitive and personal information than federal, international or other state laws, and such laws may differ from each other, which may complicate compliance efforts, requiring attention to changing regulatory requirements. We believe that we currently comply with the requirements of the CCPA, but additional provisions of the CCPA became effective in 2021 and will become effective in 2021.2023. In 2021 the CCPA went into effect and imposed certain obligations on businesses, such as a requirement to respond to consumer data access requests. We evaluated our obligations under CCPA and ensured necessary compliance. The CPRA, which goes into effect in 2023, may impose additional obligations on us. While we are working to comply with these provisions, we cannot guarantee that we will not incur significant costs or that our efforts will be successful. As a sponsor of employee benefit plans with access to certain PHI, we are subject to regulation at the federal level, including under the HIPAA and the HITECH Act. HIPAA contains restrictions and health data privacy, security and breach notification requirements with respect to the use and disclosure of PHI and there are penalties and fines for HIPAA violations.

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Additionally, in 2021 the U.S. Department of Labor issued cybersecurity best-practices guidance for sponsors, administrators, service providers and participants of defined contribution retirement plans, which guidance is relevant to the retirement plans we maintain for our corporate employees and worksite employees.
For details regarding these data privacy and security laws and regulations discussed above and that apply to our operations, refer to Part I, Item 1. Business, of this Form 10-K, under the heading Legal"The Laws and Regulatory:Regulations that affect Our Business: Data Privacy and Security Regulations.Regulations". Complying with these and any other data privacy and security laws, rules and regulations, and with any new laws or regulations or changes to existing laws, could cause us to incur substantial costs or require us to change our business practices in a manner adverse to our business, divert resources from other initiatives and projects, and restrict the way products and services involving data are offered, all of which may have a material adverse effect on our business. For example, we have incurred and expect to continue to incur additional costs to comply with the CCPA and other similar regulations. Despite our efforts, in the future we may be unable to make required changes and modifications to our business practices in a commercially reasonable manner, or at all. Given the rapid development of cybersecurity and data privacy laws, we expect to encounter inconsistent interpretation and enforcement of these laws and regulations, as well as frequent changes to these laws and regulation.regulations. As a result, we may be required to incur significant, unexpected compliance costs and we may be exposed to significant penalties or liability for non-compliance, the possibility of fines, lawsuits (including class action privacy litigation), regulatory investigations, criminal or civil sanctions, audits, adverse media coverage, public censure, other claims, significant costs for remediation and damage to our reputation, all of which could have a material adverse effect on our business and operations. Any inability, or the perception of any inability, to adequately address data privacy or security-related concerns, even if unfounded, or to comply with applicable laws, regulations, standards and other obligations relating to data privacy and security, could result in additional cost and liability to us, damage our relationships with clients and have a material adverse effect on our business.
Legal and Compliance Risks
Our business is subject to numerous complex laws, and changes in, uncertainty regarding, or adverse application of these laws could negatively affect our business.
The products and services we provide to our clients are subject to numerous complex federal, state and local laws and regulations, including those described in Part I, Item 1. Business, of this Form 10-K. These laws and regulations cover a diverse range of topics, including employer status, employee and independent contractor classifications, employee benefit,benefits, health and retirement plan laws,plans, workers' compensation, laws, employment and payroll tax, laws, worksite safety, laws, insurance and banking, laws, wage and hour, laws, anti-discrimination, laws, and many lawstopics specific to the industries of our clients. Many of these laws do not specifically address PEOs or co-employment relationships, and regulators are often unfamiliar with the PEO industry and co-employment relationships, which can lead to unpredictable application, interpretation and enforcement of these laws and regulations at the federal, state and local levels in relation to our business.
Any new laws, changes in existing laws, or any adverse application, interpretation or enforcement of new or existing laws, including those described in Part I, Item 1. Business, of this Form 10-K, whether they apply to employers generally or specifically to PEOs or to our co-employment relationships could:
reduce or eliminate the value and benefits that customersclients realize by using our products and services,
change or eliminate the types of products and services we provide,
require us to make significant changes to how we do business and provide products and services,
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require us to modify our current business practices or operations,
affect the extent and type of employee benefits that employers and co-employers can or must provide employees,
alter the amount, timing and type of taxes employers, co-employers, clients and employeesWSEs are required to pay and that we are able tomust manage for and collect from our clients,
increase the cost and complexity of the licensing requirements for our business operations,
create or increase our liability and responsibilities to our clients and WSEs, and/or
mandate new compliance requirements, disclosures or services.
Any of thesethe above changes could have a material adverse effect on our business, financial condition and results of operations.
For example, we have seen a growing trend, particularly at the federal level, of using payroll tax credits, deferrals and other related payroll tax programs as a mechanism for incentivizing SMB development and/or economic recovery. These programs are popular because they allow SMBs, which often have income tax losses, to realize benefits via payroll tax reductions, rather than income tax reductions. However, these programs have generally not been designed with the PEO industry in mind and rely on calculations contained in client income tax returns (which PEOs do not process in their role as the co-employer) and/or other client data that cannot be verified by a PEO, even though the resulting tax benefits are processed through the PEO’s payroll tax returns. Because minimal guidance exists in the statutes that create these programs, they are subject to broad agency interpretation and confusion. In addition, the processes used to evaluate payroll tax filings are designed with individual taxpayers in mind, not PEOs that aggregate the filings of many clients, which can further increase agency confusion and make it difficult to predict agency interpretations.
Examples of these programs include the 2015 PATH Act, which allows SMBs to use research and development tax credits submitted on the SMB’s income tax return to reduce the SMB’s payroll taxes, and the CARES Act and FFCRA Act payroll tax credit and payroll tax deferral programs enacted in 2020 and 2021, which allow SMBs to defer certain payroll tax obligations to a later date or to receive payroll tax credits based on SMB employment practices that are beyond our control. The IRS has taken positions that we and other PEOs, rather than clients, are responsible for client errors and repaying rejected tax credit claims under these and similar programs. While our clients are contractually responsible for repaying us for any rejected credits under these programs, a contract does not guarantee our ability to recover rejected tax credits and any failure to recover rejected tax credits from our clients would increase our operating expenses, which could result in a material adverse effect on our financial condition and results of operations.

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The laws Similarly, and the IRS has taken positions that apply inthe tax benefits under these programs should be calculated on an aggregate PEO, rather than individual client, basis, which may limit our industryability to obtain full tax benefits for our clients under these and similar programs and/or increase our exposure to employers and co-employers have in the past, and could in the future, be changed, replaced or interpreted in a manner adverse to our operations andcredit risk if we are not able to recover excess tax credits paid to our clients. We cannot predict the occurrence, directionhow these positions will ultimately be resolved and if they are resolved unfavorably, we may be forced to discontinue supporting some or ultimate impactall of these events. Any suchprograms and/or incur tax expenses that we cannot recover from our clients, which could have a material adverse effect our ability to attract and retain SMB clients.
These developments, and any other new laws, changechanges in laws or adverse application or interpretation of laws, including payroll tax incentive programs, could reduce or eliminate the attractiveness of our productsservices and services,our ability to support programs that clients want, provide customersclients with new and attractive alternatives to our products and services, significantly increase our compliance costs and the cost to provide our products and services, or require us to make substantial changes to the way in which we operate, or require us to pay client liabilities with no guarantee of subsequent recovery from our clients, and any one of whichthese outcomes could result in a material adverse effect on our financial condition and results of operations.
Changing laws and regulations governing health insurance and other traditional employee benefits at the federal, state and local level could negatively affect our business.
Changes to and continued uncertainty regarding the implementation and future of health care reform in the United States, at the federal, state and local level, has the potential to substantially change the health insurance market for SMBs and how such employers provide health insurance to their employees, which could have a materially adverse effect on how we provide our sponsored health benefits to our WSEs, and our ability to attract and retain our clients. In addition, changes at the federal, state and local level to the laws and regulations regarding other traditional employee benefits, such as retirement and workers’ compensation benefits, also have the potential to substantially change the types of benefit programs that are available to SMBs and that we and other PEOs may be
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required to offer. Our ability to comply with, and adapt our productservice offerings to take advantage of, any such changes could require significant additional costs, prove cost prohibitive and/or otherwise divert management attention, or be prohibitive based on cost, technology or other factors, which could result in a material adverse effect on our business, financial condition and results of operations.
If we are not recognized as an employer of worksite employees under federal and state regulations, we and our clients could be adversely impacted.
In order to sponsor ourcertain employee benefit plan offerings for WSEs, we must qualify as an employer of WSEs for certain purposes under the Code and ERISA. In addition, our status as anthe employer for the purposes of ERISA is important for purposes of ERISA’s preemption of certain state laws. The definition of employer under various laws is not uniform, and under both the Code and ERISA the term is defined in part by complex multi-factordifferent facts and circumstances tests.
Generally, these tests are designed to evaluate whether an individual is an independent contractor or employee and they provide substantial weight to whether a purported employer has the right to direct and control the details of an individual's work. Some factors that the IRS hasmay be considered important in the past in evaluating this issueunder these tests have included the employer’s degree of behavioral control (for example the extent of instructions, training and evaluation of the work), financial control and the economic aspects of the work relationship, the type of relationship, as evidenced by the specific contract, if any, whether employee benefits are provided, whether the work is indefinite in duration or project-based, and whether it is a regular part of the employer’s business. However, a definitive judicial interpretation of “employer” in the context of PEOs has not been established. For
We believe that we qualify as the employer of WSEs for the purposes of Sections 3(5) and 3(40) of ERISA purposes, for example, courts have heldand that test factors relatingour health plans are single-employer plans that, as such, are entitled to ERISA’s preemption of the ability to controlapplication of state law. The DOL, however, has determined on a facts and supervise an individual are less important, while the DOL has issued guidancecircumstances basis that certain entities in the HR outsourcing industry do not qualify as common law employers. In addition, the DOL routinely audits employee benefit plan offerings of employers, for ERISA purposes. Although we believe that we qualify as an employerand these audits can take years to complete. In one routine audit of WSEs under ERISA andone of TriNet’s health plans, the DOL has not provided guidance otherwise,indicated that while it agrees that we are not able to predict the outcome of any regulatory challenge.
If we were found not to be an employer for ERISA purposes, it could adversely affectbelieves that wherever there is more than one employer of a WSE, no employer may qualify as a single employer for ERISA purposes. This DOL interpretation is contrary to our interpretation of the applicable ERISA facts and circumstances test, and we understand it also is contrary to the position of other national PEOs. We will continue to vigorously defend our position that we are the sole employer of our WSEs for the purposes of Sections 3(5) and 3(40) of ERISA, and therefore that our health plans are single-employer plans entitled to ERISA’s preemption of applicable state laws. While we have no current DOL audit on-going regarding this issue, the DOL’s position remains uncertain, and this issue may arise in future audits of TriNet plans or the plans of other PEOs in our industry. If it were ultimately determined that all health plans sponsored by PEOs are multiple-employer plans and subject to potential regulation at the state level, we would likely adjust our business model and the manner in which we are able to provide employee health benefits to WSEs. Any such adjustment would require significant investment in time, cost and management attention and would have a material impact on our clients and WSEs, which could have a material adverse effect on our business and results of operations.
Similarly, to qualify for favorable tax treatment under the Code, certain employee benefit plans, such as 401(k) retirement plans and cafeteria plans must be established and maintained by an employer for the exclusive benefit of its employees. All of our 401(k) retirement plans are operated pursuant to guidance provided by the IRS and we have received favorable determination letters from the IRS confirming the qualified status of these plans. However, the IRS uses its own complex, multi-factor test to ascertain whether an employment relationship exists between a worker and a purported employer. Although we believe that we qualify as an employer of WSEs under the Code, we cannot assure you that the IRS will not challenge our position or continue to provide favorable determination letters. Moreover, the IRS' 401(k) guidance and qualification requirements are not applicable to the operation of our cafeteria plans.
IfFurther, if we are not recognized as an employer under the Code, or ERISA, we may be required to change the method by which we report and remit payroll taxes to the tax authorities and the method by which we provide, or discontinue providing, certain employee benefits to WSEs.authorities. Such changes could have a material adverse effect on our business and results of operations.

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The definition of employers, employees and independent contractors is evolving. Changes to the laws and regulations that govern what it means to be an employer or an employee may require us to make significant changes in our operations and may negatively affect our business.
National views on employers, employees and independent contractors are changing at a rapid rate, as evidenced by recent federal and state rule changes. In September 2019, California passed AB5, a law that could potentially reclassify client independent contractors as employees. In November 2020, California voter passed Proposition 22, which supersedes AB5 for certain types of contractors. On August 20, 2021, a California state court found that portions of Proposition 22 were unconstitutional and similar changesfurther held that the entirety of Proposition 22 was unenforceable. Changes like these to the rules in rules definingany jurisdiction that define when a worker is an employee or independent contractor can increase or decrease the pool of WSEs that we are allowed tocan co-employ and include in our TriNet sponsored benefit plans, which may negatively impact client demand for the products and services we provide, require us to modify or change how we operate our business and have a material adverse effect on our business and results of operations.
In addition, in January 2020, the DOL issued a new rule broadening the definition of joint employer that has been used under the Fair Labor Standards Act (FLSA) for more than sixty years. In 2022, the National Labor Relations Board (NLRB) plans to create a new rule for determining whether two businesses are joint employers under the National Labor Relations Act (NLRA). Joint employment is not the same as co-employment, and we do not believe that we are a joint employer under the new DOL rule or any future NLRB rule, or that thisthese rule change impactschanges impact our status as a co-employer. However,While the DOL rule has been partially vacated by a district court decision, these changes could still potentially result in increased FLSA joint employment claims, which could divert management attention and cause us to incur additional and potentially material costs to defend.
The examples above highlight the impact to our business when regulations regarding the definitions or classification of employers, employees, independent contractors and other groups of workers change. Any such regulatory changes could affect the way in which we provide TriNet-sponsored benefits to our WSEs, the way in which we report and remit payroll taxes to tax authorities, and our legal liability for the actions and inactions of our clients. Any of such regulatory changes could also require us to change the manner in which we operate our business, or provide our products and services, and could have an adverse effect on our business and results of operations.
If we fail to qualify as a co-employer of WSEs under applicable federal and state licensing rules,do not comply with our regulatory license requirements, or if we are deemed to be operating in certainvarious non-PEO licensed industries without the required licenses, we and our clients could be adversely impacted.
We must qualifyMost states require PEOs to hold a license and we are licensed as co-employers of WSEs and comply with licensing, certification and registration requirements for the regulation of PEOs at the federal level anda PEO in nearly every state. We expectall states without these regulations to adopt similar requirements in the future and states without these regulations today often still have laws and regulations applicable to PEOs. While we believe that we satisfy applicable state regulations, these requirements vary from state to state, they have changed frequently in the past, and could change again in the future, with potentially material impact on our operations.require such licenses. If we are not able to satisfy existing or future PEO licensing requirements or other applicable regulations in any state, we may be prohibited from doing business in that state, including having any clients within that state.
StateIn the fourth quarter of 2021, we launched a new product, called IOM, that offers clients the option to receive PEO services from TriNet while obtaining client-sponsored health benefits from a third-party broker that partners with TriNet. TriNet does not broker insurance, but we do maintain producer licenses in all 50 states and select U.S. territories. If we are not able to satisfy existing or future producer licensing requirements, or other applicable regulations in any state, we may not be able to operate this program in the same manner, or we may lose the ability to collect certain administrative fees, within that state.
In addition, state regulatory authorities generally impose licensing requirements on companies acting as insurance agents or third-party administrators, such as those that handle health or retirement plan funding and claim processing. Other state regulatory authorities impose licensing requirements on companies involved in the transmission of cash, such as banks, and other money transmitters. We do not believe that our current activities require any such licenses, but we and others in our industry have received inquiries from regulatory authorities in the past and could receive them in the future. If regulatory authorities in any state determine that we are acting as an insurance agent, third-party administrator, money transmitter, or as any other regulated industry other than a PEO, we may need to hire additional personnel to manage regulatory compliance and pay annual regulatory fees, which could have a material adverse effect on our financial condition and results of operations.
We are subject to legal and tax proceedings that may result in adverse outcomes.
We are subject to claims, suits,lawsuits, government investigations, and other legal and regulatory proceedings arising from the ordinary course of our business. Refer to Note 10 in Part II, Item 8. Financial Statements and Supplementary Data, of this Form 10-K for additional information about the legal proceedings we are currently involved in and future proceedings that we may face. Current and future legal proceedings may result in substantial costs and may divert management’s attention and resources, which may seriously harm our business, results of operations, financial condition and liquidity.
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In addition, the tax authorities in the U.S. regularly examine our income and other tax returns. Refer to Note 13 in Part II, Item 8. Financial Statements and Supplementary Data, of this Form 10-K for additional details regarding our on-going tax examinations and disputes. The ultimate outcome of tax examinations and disputes cannot be predicted with certainty. Should the IRS or other tax authorities assess additional taxes as a result of these or other examinations, we may be required to record charges to operations that could have a material impact on our results of operations, financial position or cash flows.

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Financial and Stock Ownership Risks
Our results of operations and stock price may fluctuate as a result of numerous factors, many of which are outside of our control.
Our future operating results and stock price are subject to fluctuations and quarterly variations based upon a variety of factors, many of which are not within our control, including, without limitation:
the volume and severity of health and workers' compensation insurance claims made by our WSEs, recorded as part of our insurance costs, and the timing of related claims information provided by our insurance carriers,
the amount and timing of our insurance premiums and other insurance costs, operating expenses and capital expenditures,
the number of our new clients and the number of WSEs employed by each new client,
the retention or loss of existing clients, for any reason, including third-party acquisition,
a reduction in the number of WSEs employed by existing clients,
the timing of client payments and payment defaults by clients,
the costs associated with our acquisitions of companies, assets and technologies,
any payments or draw downs on our credit facility,
any unanticipated expenses, such as litigation or other dispute-related settlement payments and compliance expenses arising from changes in regulations or regulatory enforcement,
any expenses we incur for geographic and service expansion and product and service enhancements,
any changes in laws or adverse interpretation or enforcement of laws, which may require us to change the manner in which we operate and/or increase our regulatory compliance costs,
any changes in our effective tax rate,
the issuance of common stock or debt to pay for future acquisitions, which could dilute our stockholders or subject us to significant debt service obligations,
amortization expense, or the impairment of intangible assets and goodwill, associated with past or future acquisitions, and
the impact of new accounting pronouncements.
In addition, the trading price of our common stock is subject to fluctuation in response to a variety of factors, including the factors above and below, many of which are not within our control, including, without limitation:
the overall performance of the equity markets,
any trading activity, or a market expectation regarding such activity, by our directors, executive officers and significant stockholders,
the economy as a whole, and its impact on SMBs and our clients,
the performance and market perception of companies that investors believe are similar to us, and
any significant changes in the liquidity of our common stock.stock, and
market acceptance of our performance across non-financial factors, including evolving environmental, social, and governance factors favored by investors and required by regulators.
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Many of the above factors are discussed in more detail elsewhere in this Risk Factors section and in Part II, Item 7. MD&A, of this Form 10-K. Many of these factors are outside our control, and the variability and unpredictability of these factors have in the past and could in the future cause us to fail to meet our expectations and the expectations of investors and any industry analysts who cover our shares, which could result in a decline in our share price and reduced liquidity in our shares. In addition, the occurrence of one or more of these factors might cause our results of operations to vary widely, which could lead to negative impacts on our margins, short-term liquidity, and our ability to retain or attract key personnel, and could cause other unanticipated issues, including a downgrade of our sharessecurities by or change in opinion of industry analysts and a related decline in our share price.

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The terms of our credit facility may restrict our current and future operations, which would impair our ability to respond to changes in our business and to manage our business.
Our credit facility contains, and any future indebtedness of ours would likely contain, a number of restrictive covenants that impose significant operating and financial restrictions on us subject to customary exceptions, including restricting our ability to:
incur, assume or prepay debt or incur or assume liens,
pay dividends or distributions or redeem or repurchase capital stock,
make loans, investments or acquisitions,
enter into sale-leaseback transactions,
enter into new lines of business,
complete a significant corporate transaction, such as a merger or sale of our company or its assets, and
enter into agreements that prohibit the incurrence of liens or the payment by our subsidiaries of dividends and distributions.
In July 2017, the head of the United Kingdom Financial Conduct Authority announced plans to phase out the use of LIBOR by the end of 2021. Our credit facility includes a LIBOR-indexed component and our lenders are not obligated to accept any LIBOR alternative that we may propose. However, we do not believe that the phase out of LIBOR will have a material effect on our operational or borrowing costs under our credit facility or any of our other business arrangements.
Our failure to comply with these restrictions and the other terms and conditions under our credit facility could result in a default, which in turn could result in the termination of the lenders’ commitments to extend further credit to us under our credit facility and acceleration of a substantial portion of our indebtedness then outstanding under our credit facility. If that were to happen, we may not be able to repay all of the amounts that would become due under our indebtedness or refinance our debt, which could materially harm our business and force us to seek bankruptcy protection.
Atairos, our largest stockholder, may have significant influence over our Company, and the ownership of capital stock, and thus the voting control, of our Company remains concentrated in our executive officers, directors and their affiliates, which limits your ability to influence corporate matters.
On February 1, 2017, an entity affiliated with Atairos Group, Inc. (together with its affiliates, “Atairos”) became our largest stockholder when it acquired the shares of TriNet common stock previously held by General Atlantic. In connection with this transaction, we appointed Michael J. Angelakis, the Chairman and CEO of Atairos, to our board of directors and agreed to nominate Mr. Angelakis or another designee of Atairos reasonably acceptable to our Nominating and Corporate Governance Committee for election at future annual meetings until Atairos’ beneficial ownership falls below 15% of our common stock. As of January 31, 2020,2022, Atairos beneficially owned approximately 28%33% of our outstanding common stock, and all of our directors, executive officers and their affiliates, including Atairos, beneficially own, in the aggregate, approximately 37%38% of our outstanding common stock. As a result Atairos, particularly when acting with our executive officers, directors and their affiliates, is able to exert substantial influence on all matters requiring stockholder approval, including the election of directors and approval of significant corporate transactions, such as a merger or other sale of our company or its assets. This concentration of ownership could limit the ability of other stockholders to influence corporate matters and may have the effect of delaying or preventing a third party from acquiring control over us.

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PROPERTIES, LEGAL PROCEEDINGS AND MINE SAFETY DISCLOSURES


Item 1B. Unresolved Staff Comments
None.
Item 2. Properties
We lease space for 54our offices in various U.S. states, including the following:
Corporate:Corporate Headquarters:PrincipalSignificant Client Service Centers:
• Dublin, California• Bradenton, Florida
• Reno, Nevada
• Indian Land, South Carolina
• Austin, Texas
All of these leases expire at various times up through 2028. We believe thatFor more information regarding our leases, are sufficient for our current purposesrefer to Note 8 in Part II, Item 8. Financial Statements and long-term growth and expansion goals.Supplementary Data, of this Form 10-K.
Item 3. Legal Proceedings
For the information required in this section, refer to Note 10 in Part II, Item 8. Financial Statements and Supplementary Data, of this Form 10-K.
Item 4. Mine Safety Disclosures
Not applicable.


TRINET312021 FORM 10-K

25


STOCK ACTIVITIES



PART II
Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
Market Information and Holders of Record
Our common stock is traded on the New York Stock Exchange under the symbol “TNET”.
As of February 6, 2020,7, 2022, we had 3931 holders of record of our common stock per Computershare Trust Company N.A., our transfer agent. The actual number of stockholders is greater than this number of record holders, and includes stockholders who are beneficial owners, but whose shares are held in street name by brokers and other nominees. This number of holders of record also does not include stockholders whose shares may be held in a trust by other entities.
For information regarding our equity-based incentive plans, please refer to Part III, Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters, of this Form 10-K.
Dividend Policy
We did not declare or pay cash dividends in 20192021 or 2018.2020. Payment of cash dividends if any, in the future, if ever, will be at the discretion of our board of directors and will depend on then-existing conditions, including our financial condition, operating results, contractual restrictions under our credit facility (refer to Note 9 in Part II, Item 8. Financial Statements and Supplementary Data, of this Form 10-K), capital requirements, business prospects and other factors our board of directors may deem relevant.
Performance Graph
The graph on the following page compares the cumulative return on our common stock since December 31, 20142016 with the cumulative return on the S&P 500 Index and a Peer Group Index. The cumulative return is based on the assumption that $100 had been invested in TriNet Group, Inc. common stock, the Standard & Poor's 500 Stock Index (S&P 500) and common stock of members of a Peer Group Index, all on December 31, 20142016 and that all quarterly dividends were reinvested. The cumulative dollar returns shown on the graph represent the value that such investments would have had at each year end.

TRINET322021 FORM 10-K
26


STOCK ACTIVITIES




COMPARISON OF 5-YEAR CUMULATIVE TOTAL RETURN
Among TriNet Group, Inc., the S&P 500 Index, and a Peer Group(1)
chart-49f42ffe9ef55575906a01.jpgtnet-20211231_g7.jpg
(1) The Peer Group Index used in the chart above consists of the following companies:
Automatic Data Processing, Inc.Insperity, Inc.Paychex, Inc.
Barrett Business Services, Inc.Intuit, Inc.
Issuer Purchases of Equity Securities
Our ongoingThe following table provides information about our purchases of TriNet common stock repurchase program was originally approved byduring the fourth quarter of 2021:
Period
Total Number of
Shares Purchased (1)
Weighted Average Price
Paid Per Share
Total Number of
Shares
Purchased as Part of Publicly
Announced Plans (2)
Approximate Dollar Value
of Shares that May Yet Be Purchased
Under the Plans
(in millions) (3)
October 1 - October 31, 20215,116 $98.36 — $264 
November 1 - November 30, 202145,279 $108.44 — $264 
December 1 - December 31, 202175,814 $95.15 6,202 $263 
Total126,209 6,202 
(1) In May 2014, our board of directors in 2014 and has been subsequently amended. As of December 31, 2019, our board of directors hadapproved a stock repurchase program pursuant to which we are authorized us to repurchase up to an aggregate $615 million under this program of which approximately $236 million remained available as of December 31, 2019 for repurchases under all authorizations approved by the board of directors. We repurchased approximately $140 million of our common stock in 2019 using existing cash and cash equivalents through our Rule 10b5-1 plan. Under the program, shares may be repurchased in privately negotiated and/or open market transactions, including under plans complying with Rule 10b5-1 under the Securities Exchange Act of 1934. ThisFrom time to time, our board of directors authorizes increases to our stock repurchase program and approved an aggregate total of $951 million as of December 31, 2021. The total remaining authorization has no expiration. We plan to use current cash and cash generated from ongoing operating activities to fund this sharefor future stock repurchases under our stock repurchase program. We useprogram was $263 million as of December 31, 2021. Our board of directors subsequently approved an aggregate total of $300 million under this program to return value to our stockholders and to offset dilution fromin February 2022. As a result, the issuance oftotal remaining authorization for future stock repurchases under our equity-based incentive plans and employee purchase plan.stock repurchase program was $563 million, as of February 14, 2022. The program does not have an expiration date.


27


STOCK ACTIVITIES


The following table provides information about our purchases of TriNet common stock during the fourth quarter of 2019:
Period
Total Number of
Shares Purchased (1)
Weighted Average Price
Paid Per Share
Total Number of
Shares
Purchased as Part of Publicly
Announced Plans (2)
Approximate Dollar Value
of Shares that May Yet Be Purchased
Under the Plans
(in millions) (2)
October 1- October 31, 2019156,425
$55.89
156,285
$283
November 1 - November 30, 2019554,910
$53.79
488,765
$257
December 1 - December 31, 2019513,349
$55.55
382,671
$236
Total1,224,684
 1,027,721

(1)(2) Includes shares surrendered by employees to us to satisfy tax withholding obligations that arose upon vesting of restricted stock units granted pursuant to approved plans.
(2)(3) We repurchased a total of approximately $56$1 million of our outstanding stock during the three months ended December 31, 2019.2021.
In February 2020,We use our board of directors authorized a $300 million incremental increase to our ongoing stock repurchase program initiated in May 2014. We use this program to return value to our stockholders and to offset dilution from the issuance of stock under our equity-based incentive planplans and employee purchase plan. As part of our stock repurchase program, we repurchased approximately $94 million of our common stock in 2021 using existing cash and cash equivalents through our Rule 10b5-1 plan. We plan to use current cash and cash generated from ongoing operating activities to fund our stock repurchase program.
TRINET332021 FORM 10-K


STOCK ACTIVITIES

Our stock repurchases are subject to certain restrictions under the terms of our credit facility. For more information about our stock repurchases and the restrictions imposed by our credit facility, refer to Note 9 and Note 12 in Part II, Item 8. Financial Statements and Supplementary Data, of this Form 10-K.

TRINET342021 FORM 10-K

28


SELECTED FINANCIAL DATA


Item 6. Selected Financial Data
The following selected consolidated financial and other data should be read in conjunction with Part II, Item 7. MD&A, as well as our audited consolidated financial statements and related notes included in Part II, Item 8. Financial Statements and Supplementary Data, of this Form 10-K.
 Year Ended December 31,
(in millions, except per share data)20192018201720162015
Income Statement Data:     
Total revenues$3,856
$3,503
$3,275
$3,060
$2,659
Net income212
192
178
61
32
Diluted net income per share of common stock2.99
2.65
2.49
0.85
0.44
Non-GAAP measures (1):
     
Net Service Revenues 
929
893
809
646
547
Net Insurance Service Revenues 
399
406
351
199
146
Adjusted EBITDA378
347
285
185
151
Adjusted Net Income236
218
142
87
71
      
Balance Sheet Data:     
Working capital228
221
234
156
112
Total assets2,748
2,435
2,593
2,095
2,092
Long-term debt391
413
423
459
494
Total stockholders’ equity475
375
206
35
8
      
Cash Flow Data:     
Net cash (used in) provided by operating activities$471
$(104)$606
$192
$(281)
Net cash (used in) investing activities(188)(200)(24)(27)(38)
Net cash (used in) financing activities(176)(85)(77)(104)(81)
Non-GAAP measures (1):
     
Corporate operating cash flows233
234
299
189
169
(1)Refer to Non-GAAP Financial Measures section on the following pages for definitions and reconciliations from GAAP measures.

29


SELECTED FINANCIAL DATA


Non-GAAP Financial Measures
In addition to financial measures presented in accordance with GAAP, we monitor other non-GAAP financial measures that we use to manage our business, to make planning decisions, to allocate resources and to use as performance measures in our executive compensation plan. These key financial measures provide an additional view of our operational performance over the long-term and provide information that we use to maintain and grow our business.
The presentation of these non-GAAP financial measures is used to enhance the understanding of certain aspects of our financial performance. It is not meant to be considered in isolation, superior to, or as a substitute for the directly comparable financial measures prepared in accordance with GAAP.
Non-GAAP MeasureDefinitionHow We Use The Measure
Net Service Revenues
• Sum of professional service revenues and Net Insurance Service Revenues,
 or total revenues less insurance costs.
• Provides a comparable basis of revenues on a net basis. Professional service revenues are represented net of client payroll costs whereas insurance service revenues are presented gross of insurance costs for financial reporting purposes.
• Acts as the basis to allocate resources to different functions and evaluates the effectiveness of our business strategies by each business function.
• Provides a measure, among others, used in the determination of incentive compensation for management.
Net Insurance Service Revenues• Insurance revenues less insurance costs.
• Is a component of Net Service Revenues.
• Provides a comparable basis of revenues on a net basis. Professional service revenues are represented net of client payroll costs whereas insurance service revenues are presented gross of insurance costs for financial reporting purposes. Promotes an understanding of our insurance services business by evaluating insurance service revenues net of our WSE related costs which are substantially pass-through for the benefit of our WSEs. Under GAAP, insurance service revenues and costs are recorded gross as we have latitude in establishing the price, service and supplier specifications.
• We also sometimes refer to Net Insurance Margin (NIM), which is the ratio of Net Insurance Revenue to Insurance Service Revenue.
Adjusted EBITDA
• Net income, excluding the effects of:
- income tax provision,
- interest expense,
- depreciation,
- amortization of intangible assets, and
- stock based compensation expense.

• Provides period-to-period comparisons on a consistent basis and an understanding as to how our management evaluates the effectiveness of our business strategies by excluding certain non-cash charges such as depreciation and amortization, and stock based compensation recognized based on the estimated fair values. We believe these charges are either not directly resulting from our core operations or not indicative of our ongoing operations.
• Enhances comparisons to prior periods and, accordingly, facilitates the development of future projections and earnings growth prospects.
• Provides a measure, among others, used in the determination of incentive compensation for management.
• We also sometimes refer to Adjusted EBITDA margin, which is the ratio of Adjusted EBITDA to Net Service Revenue.

30


SELECTED FINANCIAL DATA


Adjusted Net Income
• Net income, excluding the effects of:
- effective income tax rate (1),
- stock based compensation,
- amortization of intangible assets,
- non-cash interest expense (2), and
- the income tax effect (at our effective tax rate (1)) of these pre-tax adjustments.
• Provides information to our stockholders and board of directors to understand how our management evaluates our business, to monitor and evaluate our operating results, and analyze profitability of our ongoing operations and trends on a consistent basis by excluding certain non-cash charges.
Corporate Operating Cash Flows
• Net cash (used in) provided by operating activities, excluding the effects of:
- Assets associated with WSEs (accounts receivable, unbilled revenue, prepaid expenses and other current assets) and
- Liabilities associated with WSEs (client deposits, accrued wages, payroll tax liabilities and other payroll withholdings, accrued health benefit costs, accrued workers' compensation costs, insurance premiums and other payables, and other current liabilities).
• Provides information that our stockholders and management can use to evaluate our cash flows from operations independent of the current assets and liabilities associated with our WSEs.
• Enhances comparisons to prior periods and, accordingly, used as a liquidity measure to manage liquidity between corporate and WSE related activities, and to help determine and plan our cash flow and capital strategies.
(1)We have adjusted our non-GAAP effective tax rate to 25.5%, 26%, 41%, 43% and 42% for 2019, 2018, 2017, 2016 and 2015, respectively. The change in 2018 is due primarily to a decrease in the statutory tax rate from 35% to 21%. The changes in 2017, 2016 and 2015 are a result of changes in state income taxes from an increase in excludable income for state income tax purposes or state legislative changes. These non-GAAP effective tax rates exclude the income tax impact from stock based compensation, changes in uncertain tax positions and nonrecurring benefits or expenses from federal legislative changes.
(2)Non-cash interest expense represents amortization and write-off of our debt issuance costs.
Reconciliation of GAAP to Non-GAAP Measures

The table below presents a reconciliation of Total revenues to Net Service Revenues:
 Year Ended December 31,
(in millions)20192018201720162015
Total revenues$3,856
$3,503
$3,275
$3,060
$2,659
Less: Insurance costs2,927
2,610
2,466
2,414
2,112
Net Service Revenues$929
$893
$809
$646
$547
The table below presents a reconciliation of Insurance service revenues to Net Insurance Service Revenues:
 Year Ended December 31,
(in millions)20192018201720162015
Insurance service revenues$3,326
$3,016
$2,817
$2,613
$2,258
Less: Insurance costs2,927
2,610
2,466
2,414
2,112
Net Insurance Service Revenues$399
$406
$351
$199
$146
NIM12%13%12%8%6%

The table below presents a reconciliation of Net income to Adjusted EBITDA:
 Year Ended December 31,
(in millions)20192018201720162015
Net income$212
$192
$178
$61
$32
Provision for income taxes58
49
22
43
28
Stock based compensation41
44
32
26
18
Interest expense and bank fees21
22
20
20
19
Depreciation and amortization of intangible assets46
40
33
35
54
Adjusted EBITDA$378
$347
$285
$185
$151
Adjusted EBITDA Margin41%39%35%29%28%

31


SELECTED FINANCIAL DATA



The table below presents a reconciliation of Net income to Adjusted Net Income:
 Year Ended December 31,
(in millions)20192018201720162015
Net income$212
$192
$178
$61
$32
Effective income tax rate adjustment(11)(13)(59)(1)3
Stock based compensation41
44
32
26
18
Amortization of intangible assets5
5
5
16
39
Non-cash interest expense1
4
2
4
4
Income tax impact of pre-tax adjustments(12)(14)(16)(19)(25)
Adjusted Net Income$236
$218
$142
$87
$71

The table below presents a reconciliation of net cash (used in) provided by operating activities to corporate operating cash flows:
 Year Ended December 31,
(in millions)20192018201720162015
Net cash (used in) provided by operating activities$471
$(104)$606
$192
$(281)
Change in WSE related other current assets(15)33
35
(96)188
Change in WSE related liabilities(223)305
(342)93
262
Corporate Operating Cash Flows$233
$234
$299
$189
$169




32


MANAGEMENT'S DISCUSSION AND ANALYSIS


Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations
Operational Highlights
Our consolidated results for 20192021 reflect our continued progress in attracting new customerscontinuing efforts to our industry-oriented (vertical) products, servingserve our existing customersclients throughout the COVID-19 pandemic and improvingto support the economic recovery of SMBs. We will continue to monitor and evaluate developments relating to the COVID-19 pandemic and will work to respond appropriately to the impact of COVID-19 on our brand awareness through marketing.business and our clients' businesses.
Our customers are our focus, andDuring 2021 we:
continued to grow total revenues as we are investingachieved the highest Total WSEs in our processeshistory,
entered into a definitive agreement to ensureacquire Zenefits,
established our 2021 Credit Program to benefit our eligible clients,
hosted the 2nd annual TriNet PeopleForce conference, our showcase customer and prospect conference focused on business transformation, agility and innovation for small and medium-size businesses,
introduced TriNet Financial Services Preferred, a stronger customer experience. We expect this investment will further enhancenew top-tier version of our value to our customers, support retention and provide further efficiency and scale for our operations. We started this work in 2018 and expect this to continueHR solution that addresses the critical HR needs of businesses in the near-term.financial services industry,
During 2019 we:launched 'Connect 360', an innovative service model intended to better meet client needs, and
experienced an improvement in retention ascompleted a result of$500 million senior notes offering, repaid and terminated our customer service initiatives,
benefited fromoutstanding term loan, and replaced our clients growing their WSEs,
saw an increase inexisting revolving credit facility with a new sales, which delivered additional revenue growth,
continued to experience our WSEs increasing their participation, or enrollment, in our insurance offerings,
experienced increased severity of health costs per enrollee overall, but particularly within a national carrier, and
delivered profitable growth.
Our efforts to build a successful and enduring company include building and leveraging a strong national brand presence. Our branding strategy, Incredible Starts Here, is being augmented with our current campaign: People Matter. We place our customers at the center of what we do, including placing our customers at the center of our marketing.$500 million revolving credit facility.
Performance Highlights
These operational achievements drove the financial performance improvements noted below in 2019 when compared to 2018:
 $3.9B $268M $929M
 Total revenues Operating income Net Service Revenue *
 10%increase 7%increase 4%increase
         
 $212M $2.99 $236M
 Net income Diluted EPS Adjusted Net income *
 10%increase 13%increase 8%increase
         
*Non-GAAP measure      
Our results for WSEs and payroll and payroll tax payments in 20192021 when compared to 2020 are noted below:
$4.5B$455M86%
Total revenuesOperating incomeInsurance cost ratio
13 %increase24 %increase%increase
$338M$5.07$376M
Net incomeDiluted EPSAdjusted Net income *
24 %increase27 %increase24 %increase
340,067364,940
Average WSETotal WSE
%increase10 %increase
*
Non-GAAP measure. See definitions below under the heading "Non-GAAP Financial Measures".
We continued to achieve year-over-year revenue growth, reflecting our higher Average WSEs, rate increases and the prior year were:
 324,927 340,017 $41.7B
 Average WSE Total WSE Payroll and payroll tax payments
 2%increase 4%increase 11%increase
         
$111 million decrease in the Recovery Credit recognized in 2021 compared to 2020.
During 2019,2021, our averageAverage WSEs increased 5% and total WSEs grewincreased 10% compared to 2020, primarily as a result of new clients, continued hiring by clients in theour installed base and lower client attrition. In addition, ourbase.
Increased medical services utilization in 2021, combined with increased volume due to WSE growth, and increased participation in our health services resulted in a 10% increase in total revenues. We also experienced higher insurance costs duecompared to an increase2020.
The growth in medical cost trend, thattotal revenues, partially offset by increases in insurance costs and operating expenses, resulted in reduced NSR growth of 4%. Net income increased 10% and adjustedincreases in our net income increased 8%and Adjusted Net Income of 24%.

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33


MANAGEMENT'S DISCUSSION AND ANALYSIS



Results of Operations
The following table summarizes our results of operations for the three years ended December 31, 2019, 20182021, 2020 and 2017.2019. For details of the critical accounting judgments and estimates that could affect the Results of Operations, see the Critical Accounting Judgments and Estimates section within MD&A.
 Year Ended December 31,% Change
(in millions, except operating metrics data)2021202020192021 vs. 20202020 vs. 2019
Income Statement Data:
Professional service revenues$639 $544 $530 17 %%
Insurance service revenues3,901 3,490 3,326 12 
Total revenues4,540 4,034 3,856 13 
Insurance costs3,339 2,979 2,927 12 
Operating expenses746 687 661 
Total costs and operating expenses4,085 3,666 3,588 11 
Operating income455 368 268 24 37 
Other income (expense):
Interest expense, bank fees and other(20)(21)(21)(5)— 
Interest income6 10 23 (40)(57)
Income before provision for income taxes441 357 270 24 32 
Income taxes103 85 58 21 47 
Net income$338 $272 $212 24 %28 %
Cash Flow Data:
Net cash provided by operating activities218 546 471 (60)%16 %
Net cash used in investing activities(135)(151)(188)(11)(20)
Net cash provided by (used in) financing activities12 (208)(176)(106)18 
Non-GAAP measures (1):
Adjusted EBITDA565 468 378 21 24 %
Adjusted Net income376 303 236 24 28 
Corporate Operating Cash Flow415 338 233 23 45 
Operating Metrics:
Insurance Cost Ratio86 %85 %88 %(3)%
Average WSEs340,067 323,672 324,927 — 
Total WSEs364,940 331,908 340,017 10 (2)
(1)    Refer to Non-GAAP measures definitions and reconciliations from GAAP measures under the heading "Non-GAAP Financial Measures".
The following table summarizes our balance sheet data as of December 31, 2021, 2020 and 2019.
 Year Ended December 31,% Change
(in millions)2021202020192021 vs. 20202020 vs. 2019
Balance Sheet Data:
Cash and cash equivalents$612 $301 $213 103 %41 %
Working capital700 290 228 141 %27 %
Total assets3,309 3,043 $2,748 %11 %
Debt495 369 391 34 %(6)%
Total stockholders’ equity881 607 475 45 %28 %
 Year Ended December 31,% Change
(in millions, except operating metrics data)2019201820172019 vs. 20182018 vs. 2017
Income Statement Data:     
Professional service revenues$530
$487
$458
9 %6 %
Insurance service revenues3,326
3,016
2,817
10
7
Total revenues3,856
3,503
3,275
10
7
Insurance costs2,927
2,610
2,466
12
6
Operating expenses661
642
592
3
8
Total costs and operating expenses3,588
3,252
3,058
10
6
Operating income268
251
217
7
15
Other income (expense):    
Interest expense, bank fees and other(21)(22)(20)(5)10
Interest income23
12
3
92
300
Income before provision for income taxes270
241
200
12
21
Income taxes58
49
22
18
128
Net income$212
$192
$178
10 %8 %
     
     
Non-GAAP measures (1):
    
Net Service Revenues$929
$893
$809
4 %10 %
Net Insurance Service Revenues399
406
351
(2)16
Adjusted EBITDA378
347
285
9
22
Adjusted Net income236
218
142
8
53
     
Operating Metrics:    
Average WSEs324,927
317,104
324,679
2 %(2)%
Total WSEs340,017
325,616
325,370
4

Total WSEs payroll and payroll taxes processed (in millions)$41,682
$37,666
$37,115
11
1
(1)Refer to Non-GAAP measures definitions and reconciliations from GAAP measures in Part II, Item 6. Selected Financial Data.
TRINET362021 FORM 10-K


MANAGEMENT'S DISCUSSION AND ANALYSIS

A discussion regarding our financial condition and results of operations for 20182020 compared to 20172019 can be found under Part II, Item 7. Management's Discussion and Analysis in our Annual Report on Form 10-K for the year ended December 31, 2018,2020, filed with the SEC on February 14, 2019.16, 2021.

Non-GAAP Financial Measures

In addition to financial measures presented in accordance with GAAP, we monitor other non-GAAP financial measures that we use to manage our business, to make planning decisions, to allocate resources and to use as performance measures in our executive compensation plan. These key financial measures provide an additional view of our operational performance over the long-term and provide information that we use to maintain and grow our business.
The presentation of these non-GAAP financial measures is used to enhance the understanding of certain aspects of our financial performance. It is not meant to be considered in isolation from, superior to, or as a substitute for the directly comparable financial measures prepared in accordance with GAAP.
Non-GAAP MeasureDefinitionHow We Use The Measure
Adjusted EBITDA• Net income, excluding the effects of:
- income tax provision,
- interest expense, bank fees and other,
- depreciation,
- amortization of intangible assets, and
- stock based compensation expense.
• Provides period-to-period comparisons on a consistent basis and an understanding as to how our management evaluates the effectiveness of our business strategies by excluding certain non-cash charges such as depreciation and amortization, and stock-based compensation recognized based on the estimated fair values. We believe these charges are either not directly resulting from our core operations or not indicative of our ongoing operations.
• Enhances comparisons to prior periods and, accordingly, facilitates the development of future projections and earnings growth prospects.
• Provides a measure, among others, used in the determination of incentive compensation for management.
• We also sometimes refer to Adjusted EBITDA margin, which is the ratio of Adjusted EBITDA to total revenues.
Adjusted Net Income
• Net income, excluding the effects of:
- effective income tax rate (1),
- stock based compensation,
- amortization of other intangible assets, net,
- non-cash interest expense (2), and
- the income tax effect (at our effective tax rate (1) of these pre-tax adjustments.
• Provides information to our stockholders and board of directors to understand how our management evaluates our business, to monitor and evaluate our operating results, and analyze profitability of our ongoing operations and trends on a consistent basis by excluding certain non-cash charges.
Corporate Operating Cash Flows• Net cash provided by (used in) operating activities, excluding the effects of:
- Assets associated with WSEs (accounts receivable, unbilled revenue, prepaid expenses and other current assets) and
- Liabilities associated with WSEs (client deposits and other client liabilities, accrued wages, payroll tax liabilities and other payroll withholdings, accrued health benefit costs, accrued workers' compensation costs, insurance premiums and other payables, and other current liabilities).
• Provides information that our stockholders and management can use to evaluate our cash flows from operations independent of the current assets and liabilities associated with our WSEs.
• Enhances comparisons to prior periods and, accordingly, used as a liquidity measure to manage liquidity between corporate and WSE related activities, and to help determine and plan our cash flow and capital strategies.
(1)     Non-GAAP effective tax rate is 25.5% for 2021, 2020 and 2019, which excludes the income tax impact from stock based compensation, changes in uncertain tax positions and nonrecurring benefits or expenses from federal legislative changes.
34(2)    Non-cash interest expense represents amortization and write-off of our debt issuance costs and loss on a terminated derivative.


TRINET372021 FORM 10-K


MANAGEMENT'S DISCUSSION AND ANALYSIS

Reconciliation of GAAP to Non-GAAP Measures

The table below presents a reconciliation of Net income to Adjusted EBITDA:
Year Ended December 31,
(in millions)202120202019
Net income$338 $272 $212 
Provision for income taxes103 85 58 
Stock based compensation50 43 41 
Interest expense, bank fees and other20 21 21 
Depreciation and amortization of intangible assets ¹
54 47 46 
Adjusted EBITDA$565 $468 $378 
Adjusted EBITDA Margin12.5 %11.6 %9.8 %
(1)    Amount includes impairment of customer relationship intangibles and amortization of cloud computing arrangements included in operating expenses.
The table below presents a reconciliation of Net income to Adjusted Net Income:
Year Ended December 31,
(in millions)202120202019
Net income$338 $272 $212 
Effective income tax rate adjustment(10)(6)(11)
Stock based compensation50 43 41 
Amortization of other intangible assets, net ¹
12 
Non-cash interest expense3 
Income tax impact of pre-tax adjustments(17)(12)(12)
Adjusted Net Income$376 $303 $236 
(1)    Amount includes impairment of customer relationship intangibles.

The table below presents a reconciliation of net cash provided by operating activities to Corporate Operating Cash Flows:
Year Ended December 31,
(in millions)202120202019
Net cash provided by operating activities$218 $546 $471 
Less: Change in WSE related other current assets(51)10 15 
Less: Change in WSE related liabilities(146)198 223 
Net cash (used in) provided by operating activities - WSE$(197)$208 $238 
Net cash provided by operating activities - Corporate$415 $338 $233 
TRINET382021 FORM 10-K


MANAGEMENT'S DISCUSSION AND ANALYSIS

Operating Metrics
Worksite Employees (WSE)
Average WSE growth is a volume measure we use to monitor the performance of our business. Average WSEs increased 2%5% when comparing 2021 to 2020, primarily due to increased hiring by clients in 2019. Throughout 2019, we experienced reduced attrition resulting from our customer service initiatives, continuedinstalled base across most verticals in 2021, led by our Technology vertical. Most of the hiring in our installed based primarily in 2021 was from clients that benefited from our Professional ServicesRecovery Credit program that we launched in April 2020. Our Recovery Credit program was designed to assist in the economic recovery of SMBs and Technology verticals,to promote client loyalty and stronger new sales performance.incentivize client retention.
Total WSEs can be used to estimate our beginning WSEs for the next period and, as a result, can be used as an indicator of our potential future success in growing our business and retaining clients.
Anticipated revenues for future periods can diverge from the revenue expectation derived from Average WSEs or Total WSEs due to pricing differences across our HR solutions and services and the degree to which clients and WSEs elect to participate in our solutions during future periods. In addition to focusing on growing our Average WSE and Total WSE counts, we also focus on pricing strategies, productbenefit participation and productservice differentiation to expand our revenue opportunities. We report the impact of client and WSE participation differences as a change in mix.
We are focusedIn addition to focusing on retaining and growing our WSE base, including by pursuing acquisitions where appropriate, while we improvecontinue to review acquisition opportunities that would add appropriately to our customer servicescale. We continue to invest in efforts intended to enhance client experience and continuemanage attrition, through operational and process improvements.
tnet-20211231_g8.jpg

Insurance Cost Ratio (ICR)
ICR is a performance measure calculated as the ratio of insurance costs to manage attrition.
Payroll and payroll taxes processed
Payroll and payroll taxes processed, which includes recurring payrolls and non-recurring bonus payrolls, benefits, and associated payroll taxes may also be used asinsurance service revenues. We believe that ICR promotes an indicatorunderstanding of our PSR growth.insurance cost trends and our ability to align our relative pricing to risk performance.
wsea04.jpg

We purchase workers' compensation and health benefits coverage for our colleagues and WSEs. Under the insurance policies for this coverage, we bear claims costs up to a defined deductible amount. Our insurance costs, which comprise a significant portion of our overall costs, are significantly affected by our WSEs’ health and workers' compensation insurance claims experience. We set our insurance service fees for workers’ compensation and health benefits in advance for fixed benefit periods. As a result, increases in these insurance costs above our projections, reflected as a higher ICR, result in lower net income. Conversely, decreases in these insurance costs below our projections, reflected as a lower ICR, result in higher net income.
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35Under our fully-insured workers' compensation insurance policies, we assume the risk for losses up to $1 million per claim occurrence (deductible layer). The ultimate cost of the workers’ compensation services provided cannot be known until all the claims are settled. Our ability to predict these costs is limited by unexpected increases in frequency or severity of claims, which can vary due to changes in the cost of treatments or claim settlements.
Under our risk-based health insurance policies, we assume the risk of variability in future health claims costs for our enrollees. This variability typically results from changing trends in the volume, severity and ultimate cost of medical and pharmaceutical claims, due to changes to the components of medical cost trend. These trends change, and other seasonal trends and variability may develop. As a result, it is difficult for us to predict our insurance costs with accuracy and a significant increase in these costs could have a material adverse effect on our business.

(in millions)202120202019
Insurance costs$3,339 $2,979 $2,927 
Insurance service revenues3,901 3,490 3,326 
Insurance Cost Ratio86 %85 %88 %


ICR increased due to the increase in medical services utilization in 2021, combined with COVID-19 testing, treatment and vaccination costs, which together resulted in higher insurance costs. This was partially offset by the increase in insurance service revenues. While medical services utilization has increased in 2021, the ICR remains below pre-pandemic levels, as access to medical systems was constrained in regions where increases in hospitalizations arising from the COVID-19 Delta and Omicron variants reduced preventative and elective procedures.

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Total Revenues
Our revenues consist of professional service revenues (PSR) and insurance service revenues (ISR). PSR represents fees charged to clients for processing payroll-related transactions on behalf of our clients, access to our HR expertise, employment and benefit law compliance services, and other HR-related services. ISR consists of insurance-related billings and administrative fees collected from clients and withheld from WSEs for workers' compensation insurance and health benefit insurance plans provided by third-party insurance carriers.
In April 2020, we created our Recovery Credit program to assist in the economic recovery of our existing SMB clients and enhance our ability to retain eligible clients. Eligible clients received one-time reductions against fees for future services, accounted for as a discount, to be received over the following 12 months.
The reduction in total revenue under the Recovery Credit program was estimated each period based on the timing of when eligible clients received the Recovery Credit and the ultimate amount of the total Recovery Credit. As of June 30, 2021, we had fully recognized the maximum amount of $145 million for the Recovery Credit and no further reduction to revenue will be recognized.
In March 2021, we created our 2021 Credit program, which was designed to return up to $25 million to eligible customers based on the performance of our health insurance costs in 2021. We recognized a $25 million reduction to revenue for credits that will be paid to eligible clients under this program. These credits are recorded as a reduction to ISR and are payable within 12 months to eligible clients as of March 31, 2021.
In 2021, we recognized a reduction in revenue of $17 million for the Recovery Credit and $25 million for the 2021 Credit Program, compared to $128 million recognized in 2020 for the Recovery Credit.
Monthly total revenues per Average WSE is a measure we use to monitor the success of our product and service pricing strategies. This measure increased 8% during 20197% in 2021 compared to 2018.2020.
We also use the following measures to further analyze changes in total revenue:
Volume - the percentage change in period over period Average WSEs,
Rate - the combined weighted average percentage changes in service fees for each vertical productservice and changes in service fees associated with each insurance service offering, and
Mix - the change in composition of Average WSEs within our verticals combined with the composition of our enrolled WSEs within our insurance service offerings.offerings, and
revenue.jpgCredit - the weighted average amounts recognized for the Recovery Credit and 2021 Credit programs.
tnet-20211231_g9.jpgtnet-20211231_g10.jpgtnet-20211231_g11.jpg
PSR
ISR - % represents proportion of insurance service revenues to total revenues

The volume increasegrowth in 2019total revenues was primarily driven by WSEhigher Average WSEs and growth especially in our Professional Services and Technology verticals. The changes in rate, and mix during 2019, were primarily drivencombined with the $111 million decrease in the Recovery Credit recognized in 2021. This was partially offset by increasesthe $25 million reduction in insurance service fees and increased health plan enrollment in our insurance service offerings.

revenue recognized for the 2021 Credit Program.
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Operating Income
Our operating income consists of total revenues less insurance costs and OE. Our insurance costs include insurance premiums for coverage provided by insurance carriers, reimbursement of claims payments made by insurance carriers or third-party administrators, and changes in accrued costs related to contractual obligations with our workers' compensation and health benefit carriers. Our OE consists primarily of our corporate employees' compensation related expenses, which includes payroll, payroll taxes, SBC, bonuses, commissions and other payroll-and benefits-related costs.
The table below provides a view of the changes in components of operating income on a year-over-year basis.
(in millions)
$25136820182020 Operating Income
+353506Higher total revenues areprimarily driven by higher Average WSEs, rate increases and a result of increases$111 million decrease in insurance service fees and health plan enrollmentthe Recovery Credit recognized. This was partially offset by the $25 million reduction in our insurance service offerings combined with growthrevenue recognized for the 2021 Credit Program in PSR.2021.
-317-360Higher insurance costs primarily as a result of an increasehigher medical services utilization in 2021 compared to 2020 when we saw a significantly lower than typical medical cost trendservices utilization due to stay-at-home orders and health plan participation, or enrollment.social distancing practices due to the COVID-19 pandemic.
-19-59Higher OE primarily as a result of growth in our corporate employeeincreased sales and marketing expense, higher payroll tax and assessments and D&A, together with higher compensation costsand consulting expenses to support initiatives to improve customerclient experience, enhance productservice offerings, and improve processes.
$26845520192021 Operating Income

Professional Service Revenues
Our clients are primarily billed either based on a fee per WSE per month per transaction or on a percentage of the WSEs’ payroll. For those clients that are billed on a percentage of WSEs' payroll, as our clients' payrolls increase, our fees also increase.
transaction. Our vertical approach provides us the flexibility to offer our clients in different industries with varied services at different prices, which we believe potentially reduces the value of solely using Average WSE and Total WSE counts as indicators of future potential revenue performance.
We also analyze changes in PSR with the following measures:
Volume - the percentage change in period over period Average WSEs,
Rate - the weighted average percentage change in fees for each vertical, and
Mix - the change in composition of Average WSEs across our verticals.verticals, and
psra11.jpgRecovery Credit - the weighted average amounts recognized for the Recovery Credit program.
tnet-20211231_g12.jpgtnet-20211231_g13.jpgtnet-20211231_g14.jpg
The growth in PSR was driven by higher Average WSEs, a growth in rate and a $12 million decrease in the Recovery Credit recognized. The growth in rate was weighted to our smaller clients, and included an increase in PSR during 2019 reflects the result of our vertical pricing strategy and ongoing change in the mix of our WSEs.fees for other services, including COBRA administration. We continued to experience WSE growth, especiallya favorable change in our vertical mix of WSEs, as SMBs in our Technology, Financial Services and Professional Services and Technology verticals whilereturned to hiring at a faster rate than our Main Street vertical continued to shrink, but at a reduced rate when compared to 2018.

vertical.
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Insurance Service Revenues
ISR consists of insurance services-related billings and administrative fees collected from clients and withheld from WSE payroll for health benefits and workers' compensation insurance provided by third-party insurance carriers.
We use the following measures to analyze changes in ISR:
Volume - the percentage change in period over period Average WSEs,
Rate - the weighted average percentage change in fees associated with each of our insurance service offerings,
Mix - all other changes including the composition of our enrolled WSEs within our insurance service offerings (health plan enrollment), and
Credit - the weighted average amounts recognized for the Recovery Credit and 2021 Credit programs.

tnet-20211231_g15.jpgtnet-20211231_g16.jpgtnet-20211231_g17.jpg
The growth in ISR was primarily driven by higher Average WSEs, rate increases and the $99 million decrease in the Recovery Credit recognized, partially offset by the $25 million reduction in revenue recognized for the 2021 Credit Program.
Insurance Costs

Insurance costs include insurance premiums for coverage provided by insurance carriers, payments for claims costs and other risk management services, reimbursement of claims payments made by insurance carriers or third-party administrators below a predefined deductible limit, and changes in accrued costs related to contractual obligations with our workers' compensation and health benefit carriers.
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We use the following measures to analyze changes in insurance costs:
Volume - the percentage change in period over period Average WSEs,
Rate - the weighted average percentage change in cost trend associated with each of our insurance service offerings, and
Mix - all other changes including the composition of our enrolled WSEs within our insurance service offerings (health plan enrollment).
isra16.jpg
tnet-20211231_g18.jpgtnet-20211231_g19.jpgtnet-20211231_g20.jpg

During 2020, stay-at-home orders and social distancing practices due to the COVID-19 pandemic decreased medical services utilization, particularly in the second quarter, as enrollees deferred or cancelled elective procedures and reduced outpatient medical, dental and vision services. Medical services utilization increased in 2021 as enrollees returned to outpatient medical, dental and vision care and elective procedures. The higher utilization was partially offset by reductions in some regions for part of the year due to the surges of the COVID-19 Delta and Omicron variants. As a result, our medical services utilization in 2021 remained below pre-pandemic levels.
The growthincrease in ISR during 2019 primarily resulted from changesmedical services utilization in rate, due to higher insurance service fees per plan participant2021, combined with increased COVID-19 testing, treatment and changesvaccination costs, caused the increase in mix, due to higherrate. This was partially offset by larger positive claims development as our accrued health plan enrollment.
Insurance Costs

Insurance costs include insurance premiums for coverage provided by insurance carriers, reimbursement of claims payments made by insurance carriers or third-party administrators, and changes in accrued costs related to contractual obligations with our workers' compensation and health benefit carriers.
We use the following measures to analyze changescosts as of December 31, 2020 were paid in insurance costs:
Volume - the percentage change2021. The increase in period over periodvolume was primarily driven by higher Average WSEs,
Rate - the weighted average percentage change in cost trend associated with each of our insurance service offerings, and
Mix - all other changes including the composition of our enrolled WSEs within our insurance service offerings (health plan enrollment).
isca17.jpg


WSEs.
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The increase in insurance cost rates during 2019 was primarily driven by:
Increased severity of health costs per enrollee (medical cost trend) of 10.5% - 11.5% in 2019, particularly within one national carrier, arising from a shift in pharmaceutical utilization from brand name drugs to higher cost specialty drugs, combined with elevated health costs in a portion of this business, partially offset by lower health administrative costs.
Partially offset by an $11 million decrease in workers' compensation claim costs.
We continued to experience favorable prior year development on our accrued workers' compensation costs of $31 million during 2019, primarily due to lower than expected claim severity.

Net Service Revenues
NSR provides us with a comparable basis of revenues on a net basis, acts as the basis to allocate resources to different functions and helps us evaluate the effectiveness of our business strategies by each business function.
nsr11.jpg
The primary drivers to the changes in our NSR are presented below.
nsr2.jpg
NIM was 12% for 2019 representing a decrease of 1% from 2018, due to insurance costs rate increases exceeding the ISR rate increases achieved, as discussed previously.

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MANAGEMENT'S DISCUSSION AND ANALYSIS



Operating Expenses
OE includes cost of providing services (COPS), sales and marketing (S&M), general and administrative (G&A), systems development and programming (SD&P), and depreciation and amortization expenses (D&A).
We manage our operating expenses and allocate resources across different business functions based on a percentage of NSR, which has decreased to 71% in 2019 from 72% in 2018.
We had approximately 2,9002,800 corporate employees as of December 31, 20192021 in 5411 offices across the U.S. In 2021, we continued to exit expiring leases due to our evolving remote work practices and policies. Our corporate employees' compensation-related expenses represent a majority of our operating expenses. Compensation costs for our corporate employees include payroll, payroll taxes, SBC, bonuses, commissions and other payroll- and benefits-related costs. Compensation-related expense represented 62% and 63% of our OE in 20192021 and 61% in 2018.2020, respectively.
During the year ended December 31, 2019,In 2021, we experienced operating expenseOE growth of 3% when9% compared to the same period in 2018. We expect our OE to increase in the foreseeable future due to our continued efforts to improve our customer service experience and our systems and processes. During the year ended December 31, 2019, the percent2020. The ratio of OE to total revenues was 16% and 17%, compared to 18% in 2018.2021 and 2020, respectively.

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% represents portion of compensation related expense included in operating expenses
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We analyze and present our OE based upon the business functions COPS, S&M, G&A and SD&P and depreciation and amortization.D&A. The charts below provide a view of the expenses of the business functions. Dollars are presented in millions and percentages represent year-over-year change.
oe2a11.jpg
tnet-20211231_g24.jpgtnet-20211231_g25.jpgtnet-20211231_g26.jpgtnet-20211231_g27.jpgtnet-20211231_g28.jpg
(in millions)
$64268720182020 Operating Expense
+2COPS was consistent with the prior year.
+16COPSS&M increased, in 2019, driven primarily by increases inincreased compensation and costs related to our 2nd annual TriNet PeopleForce conference.
+24G&A increased, driven primarily by increased payroll tax and related payroll tax assessments, compensation and technology services expenses to support initiatives to improve our customer experience, our systems and processes, and to enhance our product offerings. We also experienced an increase in the volume of EPLI claim expenses.
efficiency.
+810S&MSD&P increased, in 2019, driven primarily by an increase in headcountincreased consulting and amortization of deferred commissions expense relatedtechnology services expenses as we continue to work to improve our growth in new sales.client experience and our systems and processes.
-5G&A decreased in 2019, driven by a decrease in compensation related expenses and professional fees.
-6SD&P decreased in 2019, primarily due to a decrease in compensation related expenses and professional fees.
+67D&A increased, in 2019,driven primarily as a resultby the impairment of our investments in technology to support our customer service initiatives.relationship intangibles.
$66174620192021 Operating Expenses
The primary drivers to the changes in our OE are presented below:
tnet-20211231_g29.jpg

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We break out the expenses that make up our OE in the chart below:
oe3a11.jpg
Other Income (Expense)
Other income (expense) consists primarily of interest and dividend income from investments, and interest expense under our previous credit facility.facility and interest on our 3.50% Senior Notes due 2029 (our 2029 Notes) issued in February 2021.
oe4a11.jpgtnet-20211231_g30.jpgtnet-20211231_g31.jpg

Interest income increased to $23 million in 2019 decreased primarily due to a change in our investment strategy initiated in the second quarter of 2018 to improve ourlower average market interest income. Our investment strategy has improved our interest income, net income, Adjusted Net Income and Adjusted EBITDA, year-over-year. rates. Interest expense, bank fees and other, remained was consistent year-over-year.with the prior period.
Provision for Income Taxes
Our effective tax rate (ETR) was 21%23% and 20%24% for the years ended December 31, 20192021 and 2018,2020, respectively. The change in ETR was driven by a 3% increase primarily from one-time expensesattributable to benefits associated with SBC, partially offset by a 2% decreasefavorable adjustment of our previously disputed receivable from a one-time benefit associated with prior year tax expense and changes in the valuation allowance.IRS.

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MANAGEMENT'S DISCUSSION AND ANALYSIS


Liquidity and Capital Resources
Liquidity
Liquidity is a measure of our ability to access sufficient cash flows to meet the short-term and long-term cash requirements of our business operations. Our principal source of liquidity for operations is derived from cash provided by operating activities. We rely on cash provided by operating activities to meet our short-term liquidity requirements, which primarily relate to the payment of corporate payroll and other operating costs, and capital expenditures. Our cash flow related to WSE payroll and benefits is generally matched by advance collection from our clients. To minimize the credit risk associated with remitting the payroll and associated taxes and benefits costs, we require clients to prefund the payroll and related payroll taxes and benefits costs.
We believe that we have sufficient liquidity and capital resources to satisfy future requirements andcan meet our obligations to our clients, creditorspresent and debt holders.reasonably foreseeable operating cash needs and future commitments through existing liquid assets and continuing cash flows from corporate operating activities.
Included in our balance sheets are assets and liabilities resulting from transactions directly or indirectly associated with WSEs, including payroll and related taxes and withholdings, our sponsored workers' compensation and health insurance programs, and other benefit programs. Although we are not subject to regulatory restrictions that require us to do so, we distinguish and manage our corporate assets and liabilities separately from those current assets and liabilities held by us to satisfy our employer obligations associated with our WSEs as follows:
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December 31,December 31,
2019201820212020
(in millions)CorporateWSETotalCorporateWSETotal(in millions)CorporateWSETotalCorporateWSETotal
Current assets: Current assets:
Cash and cash equivalents$213
$
$213
$228
$
$228
Cash and cash equivalents$612 $ $612 $301 $— $301 
Investments68

68
54

54
Investments135  135 57 — 57 
Restricted cash, cash equivalents and investments15
1,165
1,180
15
927
942
Restricted cash, cash equivalents and investments19 1,176 1,195 15 1,373 1,388 
Other current assets45
365
410
36
386
422
Other current assets91 406 497 59 355 414 
Total current assets$341
$1,530
$1,871
$333
$1,313
$1,646
Total current assets$857 $1,582 $2,439 $432 $1,728 $2,160 
Total current liabilities$113
$1,530
$1,643
$112
$1,313
$1,425
Total current liabilities157 1,582 $1,739 $142 $1,728 $1,870 
Working capital$228
$
$228
$221
$
$221
Working capital$700 $ $700 $290 $— $290 
To meet various U.S. state licensing requirements and maintain accreditation by the ESAC, we are subject to various minimum working capital and net worth requirements. As of December 31, 2019,2021, we believe wedid not have fully complied in allany material respects with all applicable state regulations regarding minimum net worth, workingoff-balance sheet arrangements that are reasonably likely to have a current or future effect on our financial condition, results of operations, liquidity, capital and all other financial and legal requirements. Further, we have maintained positive workingexpenditures or capital throughout each of the periods covered by the financial statements.resources.
Working capital for WSEs related activities
We designate funds to ensure that we have adequate current assets to satisfy our current obligations associated with WSEs.WSEs, the Recovery Credit liability and 2021 Credit Program liability. We expect the Recovery Credit and 2021 Credit Program aggregate liability of $48 million as of December 31, 2021 to be settled over the following 12 months. We manage our WSE payroll and benefits obligations through collections of payments from our clients which generally occursoccur two to three days in advance of client payroll dates. We regularly review our short-term obligations associated with our WSEs (such as payroll and related taxes, insurance premium and claim payments) and designate funds required to fulfill these short-term obligations, which we refer to as PFC. PFC is included in current assets as restricted cash, cash equivalents and investments.
We manage our sponsored benefit and workers' compensation insurance obligations by maintaining collateral funds in restricted cash, cash equivalents and investments. These collateral amounts are generally determined at the beginning of each plan year and we may be required by our insurance carriers to adjust our collateral balances when facts and circumstances change. We regularly review our collateral balances with our insurance carriers and anticipate funding further collateral in the future based upon our capital requirements. We classify our restricted cash, cash equivalents and investments as current and noncurrent assets to match against the anticipated timing of paymentpayments to carriers.
The following table summarizes our workers' compensation obligations, gross of claims.collateral, as of December 31, 2021,
 Payments Due by Period
(in millions)TotalLess than 1 year1-3 years3-5 yearsMore than 5 years
Workers' compensation obligations (1)
$198 $57 $62 $26 $53 
(1) Represents estimated payments that are expected to be made to carriers for various workers' compensation programs under the contractual obligations. These obligations include the costs of reimbursing the carriers for paying claims within the deductible layer in accordance with the workers' compensation insurance policy.
Working capital for corporate purposes

Corporate working capital as of December 31, 2021 increased $410 million from December 31, 2020, primarily driven by a $311 million increase in corporate unrestricted cash and cash equivalents and a $78 million increase in corporate investments.
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We use our available cash and cash equivalents to satisfy our operational and regulatory requirements and to fund capital expenditures. We believe that we can meet our present and reasonably foreseeable operating cash needs and future commitments through existing liquid assets, continuing cash flows from corporate operating activities our borrowing capacity under our revolving credit facility and the potential issuance of debt or equity securities. We believe our existing corporate cash and cash equivalents and positive working capital will be sufficient to meet our working capital expenditure needs for at least the next twelve months.

The following table summarizes our purchase obligations as of December 31, 2021,

 Payments Due by Period
(in millions)TotalLess than 1 year1-3 years3-5 yearsMore than 5 years
Purchase obligations (1)
$150 $87 $56 $$— 
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MANAGEMENT'S DISCUSSION AND ANALYSIS


(1) Our purchase obligations primarily consist of software licenses, consulting and maintenance agreements, and sales and marketing events pertaining to various agreements.
Cash Flows
The following table presents our cash flow activities for the stated periods:
Year Ended December 31, Year Ended December 31,
(in millions)20192018(in millions)20212020
CorporateWSETotalCorporateWSETotalCorporateWSETotalCorporateWSETotal
Net cash provided by (used in):   Net cash provided by (used in):  
Operating activities$233
$238
$471
$234
$(338)$(104)Operating activities$415 $(197)$218 $338 $208 $546 
Investing activities(191)3
(188)(200)
(200)Investing activities(119)(16)(135)(69)(82)(151)
Financing activities(176)
(176)(85)
(85)Financing activities12  12 (208)— (208)
Net increase (decrease) in cash and cash equivalents, unrestricted and restricted$(134)$241
$107
$(51)$(338)$(389)Net increase (decrease) in cash and cash equivalents, unrestricted and restricted$308 $(213)$95 $61 $126 $187 
Cash and cash equivalents, unrestricted and restricted: Cash and cash equivalents, unrestricted and restricted:
Beginning of period$425
$924
$1,349
$476
$1,262
$1,738
Beginning of period$352 $1,291 $1,643 $291 $1,165 $1,456 
End of period$291
$1,165
$1,456
$425
$924
$1,349
End of period$660 $1,078 $1,738 $352 $1,291 $1,643 
 
Net increase (decrease) in cash and cash equivalents: Net increase (decrease) in cash and cash equivalents:
Unrestricted$(15)$
$(15)$(108)$
$(108)Unrestricted$311 $ $311 $88 $— $88 
Restricted(119)241
122
57
(338)(281)Restricted(3)(213)(216)(27)126 99 
Operating Activities
Components of net cash (used in) provided by operating activities are as follows:
 Year Ended December 31,
(in millions)20212020
Net cash provided by operating activities$218 $546 
Net cash provided by operating activities - Corporate$415 $338 
Net cash provided by (used in) operating activities - WSE$(197)$208 
 Year Ended December 31,
(in millions)20192018
Net income$212
$192
Depreciation and amortization57
46
Noncash lease expense16

Stock based compensation expense41
44
Payment of interest(19)(17)
Income tax payments, net(62)(49)
Changes in deferred taxes(7)1
Changes in other operating assets(36)(44)
Changes in other operating liabilities31
61
Net cash provided by operating activities - Corporate$233
$234
Collateral (paid to) refunded from insurance carriers, net6
26
Changes in other operating assets15
(27)
Changes in other operating liabilities217
(337)
Net cash (used in) provided by operating activities - WSE$238
$(338)
Net cash (used in) provided by operating activities$471
$(104)


Year-over-yearThe year-over-year change in net cash used in operating activities for WSE purposes was primarily driven by timing of client payments, payments of payroll and payroll taxes, and collateral fundingsettlement of the Recovery Credit, and insurance claim activities. We expect the changes in restricted cash and cash equivalents to correspond to WSE cash provided by (or used in) operations as we manage our obligations associated with WSEs through restricted cash.

CorporateOur corporate operating cash flows in 2019 remained consistent2021 increased when compared to 2018.


2020 due to the increase in our net income and the timing of our payments of corporate obligations.
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Investing Activities
Cash used in investing activities for the periods presented below primarily consisted of purchases of investments and capital expenditures, partially offset by proceeds from the sale and maturity of investments.
Year Ended December 31, Year Ended December 31,
(in millions)20192018(in millions)20212020
Investments: Investments:
Purchases of investments$(302)$(258)Purchases of investments$(444)$(327)
Proceeds from sale and maturity of investments159
101
Proceeds from sale and maturity of investments349 224 
OtherOther (12)
Cash used in investments$(143)$(157)Cash used in investments$(95)$(115)
 
Capital expenditures: Capital expenditures:
Software and hardware$(34)$(30)Software and hardware$(33)$(33)
Office furniture, equipment and leasehold improvements(11)(13)Office furniture, equipment and leasehold improvements(7)(3)
Cash used in capital expenditures$(45)$(43)Cash used in capital expenditures$(40)$(36)
Cash used in investing activities$(188)$(200)Cash used in investing activities$(135)$(151)
Investments
We invest a portion of available cash in investment-grade securities with effective maturities less than five years that are classified on our balance sheets as investments. As of December 31, 2019, we had approximately $193 million in investments.
We also invest funds held as collateral to satisfy our long-term obligation towards workers' compensation liabilities. These investments are classified on our balance sheets as restricted cash, cash equivalents and investments. We review the amount and the anticipated holding period of these investments regularly in conjunction with our estimated long-term workers' compensation liabilities and anticipated claims payment trend. At December 31, 2021, our investments had a weighted average duration of less than two years and an average S&P credit rating of AA.
As of December 31, 2019,2021, we held approximately $1.8$2.3 billion in restricted and unrestricted cash, cash equivalents and investments, of which $213$612 million is unrestricted.was unrestricted cash and cash equivalents and $303 million was unrestricted investments. Refer to Note 2 in Part II, Item 8. Financial Statements and Supplemental Data, in this Form 10-K for a summary of these funds.
In December 2021, we entered into a definitive agreement to acquire Zenefits. The total purchase price of $220 million, subject to customary closing adjustments, will be settled by the issuance of up to $20 million of TriNet stock to eligible selling shareholders, with the remainder paid in cash from corporate working capital. The acquisition is subject to customary closing conditions and regulatory approval and is expected to close in the first quarter of 2022.
Capital Expenditures
During 2019,2021, we continued to make investments in software and hardware and we enhanced our existing productsservice offerings and technology platform. We also incurred expenses related to the build out of our corporate headquarters and our technology and client service centers. We expect capital investments in our software and hardware to continue in the future.
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MANAGEMENT'S DISCUSSION AND ANALYSIS

Financing Activities
Net cash used inprovided by (used in) financing activities in the years ended December 31, 20192021 and 20182020 consisted of our debt and equity-related activities.
 Year Ended December 31,
(in millions)20212020
Financing activities
Repurchase of common stock, net of issuance$(109)$(186)
Proceeds from issuance of 2029 Notes500 — 
Repayment of borrowings(370)(22)
Payment of debt issuance costs(7)— 
Payment of long-term financing fees(2)— 
Draw down from revolving credit facility 234 
Repayment of borrowings under revolving credit facility (234)
Cash provided by (used in) financing activities$12 $(208)
 Year Ended December 31,
(in millions)20192018
Financing activities  
Repurchase of common stock, net of issuance$(154)$(69)
Repayment of borrowings(22)(22)
Net proceeds from issuance of debt
6
Cash used in financing activities$(176)$(85)
In June 2018During the year ended December 31, 2021, we entered into a $425repurchased 1,161,909 shares of our common stock for approximately $94 million term loan A (our 2018 Term Loan)through our stock repurchase program. As of December 31, 2021, approximately $263 million remained available for repurchase under all authorizations by our new credit agreement (2018 Credit Agreement). The proceedsboard of the 2018 Term Loan were useddirectors. We plan to repay our previously outstanding term loans. Referuse current cash and cash generated from ongoing operating activities to Note 9 in Part II, Item 8. Financial Statements and Supplemental Data, infund this Form 10-K for more details.

45


MANAGEMENT'S DISCUSSION AND ANALYSIS


Westock repurchase shares to return value to our stockholders and to offset dilution from the issuance of stock under our equity-based incentive plan and employee purchase plan. Refer to Note 12 in Part II, Item 8. Financial Statements and Supplemental Data, in this Form 10-K for more details.program.
In February 2020,2022, our board of directors authorized a $300 million incremental increase to our ongoing stock repurchase program initiated in May 2014. We use this program to return value to our stockholders and to offset dilution from the issuance of stock under our equity-based incentive plan and employee purchase plan.
Capital Resources
AsIn February 2021, we issued $500 million aggregate principal amount of December 31, 2019, $392our 2029 Notes. $370 million of the proceeds was outstanding under ourused to repay and terminate the 2018 Term Loan. Our 2018 Credit Agreement includes a $250 million revolving credit facility (our 2018 Revolver), which will beLoan A. The remaining funds were used solely for working capital and other general corporate purposes. The 2018 Revolver includes capacity for a $20 million swingline facility. Letters of credit issued pursuantRefer to the revolving credit facility reduce the amount available for borrowing under the 2018 Revolver. At December 31, 2019, we had $16 million of letters of credit outstanding and remaining capacity of $234 million under the 2018 Revolver.
Each of our 2018 Term Loan and our 2018 Revolver mature in June 2023 and bear interest, at our option, either at a LIBOR rate, or the prime lending rate, plus an applicable margin subject to change in the future based on our leverage ratio, as set forth in our 2018 Credit Agreement.
Our 2018 Credit Agreement contains customary affirmative and restrictive financial covenants and representations and warranties that are customary for facilities of this type, including restrictions on indebtedness, liens, investments, mergers, dispositions, prepayment of indebtedness (other than our 2018 Term Loan and our 2018 Revolver), dividends, distributions and transactions with affiliates, as well as minimum interest coverage and maximum total leverage ratio requirements. We were in compliance with the covenants and restrictions under our 2018 Credit Agreement at December 31, 2019.
Contractual Obligations
The following table summarizes our significant contractual obligations as of December 31, 2019:
 Payments Due by Period
(in millions)TotalLess than 1 year1-3 years3-5 yearsMore than 5 years
Debt obligations (1)
$392
$22
$44
$326
$
Workers' compensation obligations (2)
217
66
49
34
68
Operating lease obligations (3)
74
19
21
15
19
Purchase obligations (4) 
60
34
22
4

Uncertain tax positions (5)
7
1
6


Total$750
$142
$142
$379
$87
(1) Includes principal and the projected interest payments of our term loans, see Note 96 in Part II, Item 8. Financial Statements and Supplementary Data, of this Form 10-K for details.further information.
(2) Represents estimated payments that are expected to be made to carriers for various workers' compensation program under the contractual obligations. These obligations include the costs of reimbursing the carriers for paying claims within the deductible layer in accordanceIn February 2021, concurrently with the workers' compensation insurance policy as well as other liabilities.
(3) Includes variousclosing of our 2029 Notes offering, we entered into a new $500 million revolving credit facility under a new credit agreement (our 2021 Credit Agreement). The 2021 Credit Agreement includes a $100 million letter of credit sub-facility and a $40 million swingline sub-facility. We also have the option to incur incremental credit facilities of up to the greater of $450 million and equipment leases under various operating lease agreements.
(4) Our purchase obligations primarily consist100% of software licenses, consulting and maintenance agreements, and sales and marketing events pertaining to various contractual agreements.
(5) Our uncertain tax positions primarily pertain to tax credits and other related reserves, including interest and penalties.
InEBITDA for the normal coursemost recent period of business, we make representations and warranties that guarantee the performance of services under service arrangements with clients. Historically, therefour fiscal quarters for which financial statements have been no material losses relateddelivered. Such incremental facilities are subject to such guarantees.obtaining additional commitments from lenders. At December 31, 2021, we had $500 million available under our 2021 Credit Agreement.
Capital Resources
As of December 31, 2021, $500 million aggregate principal of our 2029 Notes was outstanding. The Indenture governing the 2029 Notes includes restrictive covenants limiting our ability to: (i) create liens on certain assets to secure debt; (ii) grant subsidiary guarantees of certain debt without also providing a guarantee of the 2029 Notes; and (iii) consolidate or merge with or into, or sell or otherwise dispose of all or substantially all of our assets to, another person, subject, in each case, to certain customary exceptions.
Our 2021 Credit Agreement includes a $500 million revolving credit facility. The 2021 Credit Agreement includes negative covenants that limit our ability to incur indebtedness and liens, sell assets and make restricted payments, including dividends and investments, subject to certain exceptions. In addition, we have entered into indemnification agreementsthe 2021 Credit Agreement also contains other customary affirmative and negative covenants and customary events of default. The 2021 Credit Agreement also contains a financial covenant that requires the Company to maintain certain maximum total net leverage ratios.
We were in compliance with all financial covenants under our officers and directors, which require us to defend and, if necessary, indemnify these individuals for certain pending or future legal claims as they relate to their services provided to us. Such indemnification obligations are not included in the table above.2021 Credit Agreement at December 31, 2021.

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MANAGEMENT'S DISCUSSION AND ANALYSIS



Off-Balance Sheet Arrangements
As of December 31, 2019, we did not have any material off-balance sheet arrangements that are reasonably likely to have a current or future effect on our financial condition, results of operations, liquidity, capital expenditures or capital resources within the meaning of Item 303(a)(4) of Regulation S-K.
Critical Accounting Judgments and Estimates
Our consolidated financial statements are prepared in accordance with GAAP, which require us to make estimates, judgments, and assumptions that affect reported amounts of assets, liabilities, revenues and expenses, and the related disclosures of contingent assets and liabilities. These estimates are based on historical experience and on various other assumptions that we believe to be reasonable under the circumstances. Some of the assumptions are highly uncertain at the time of estimation. To the extent actual experience differs from the assumptions used, our consolidated financial statements could be materially affected. For additional information about our accounting policies, refer to Note 1 in Part II, Item 8. Financial Statements and Supplementary Data, of this Form 10-K.
The following items require significant estimation or judgment:
Insurance Costs
We purchase fully insured workers' compensation and health benefits coverage for our employees and WSEs. As part of these insurance policies, we bear claims costs up to a defined deductible amount and as a result, we establish accrued insurance costs including both known claims filed and estimates for incurred but not reported claims.
We use external actuaries to evaluate, review and recommend estimates of our accrued workers' compensation and health insurance costs. The accrued costs studies performed by these qualified external actuaries analyze historical claims data to develop a range of our potential ultimate costs using loss development, expected loss ratio and frequency/severity methods in accordance with Actuarial Standards of Practice. These methods are applied to classes of the claims data organized by policy year and risk class.
Key judgments and evaluations in arriving at loss estimates by class and the accrued costs selection overall include:
the selection of method used and the relative weights given to selecting the method used for each policy year,
the underlying assumptions of LDF used in these models,
the effect of any changes to the insurers' claims handling and payment processes,
evaluation of medical and indemnity cost trends, costs from changes in the risk exposure being evaluated and any applicable changes in legal, regulatory or judicial environment.
We review and evaluate these judgments and the associated recommendations in concluding the adequacy of accrued costs. Our quarterly reserving process involves the collaboration of our qualified external actuaries and our actuarial and finance departments to approve a single point best estimate. In selecting this best estimate, management considers the actuarial estimates and applies informed judgment regarding qualitative factors that may not be fully captured in these actuarial estimates. Such factors include, but are not limited to: the timing of the emergence of claims, volume and complexity of claims, social and judicial trends, and the extent of our historical loss data versus industry information. Where adjustments are necessary these are recorded in the period in which the adjustments are identified.
These accrued costs may vary in subsequent quarters from the amount estimated. Certain assumptions used in estimating these accrued costs are highly judgmental. Our accrued costs, results of operations and financial condition can be materially impacted if actual experience differs from the assumptions used in establishing these accrued costs.
Accrued Workers' Compensation Costs
Under our policies, we are responsible for reimbursing the insurance carriers for workers' compensation losses up to $1 million per claim occurrence (Deductible Layer). As workers' compensation costs for a particular period are not known for many years after the losses have occurred, these costs represent our best estimate of unpaid claim losses and loss adjustment expenses within the deductible layer in accordance with our insurance policies. We use external actuaries to evaluate, review and recommend accrued workers' compensation costs on a quarterly basis. The data is segmented by class and state and analyzed by policy year, and states where we have small exposure are aggregated into a single grouping.

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MANAGEMENT'S DISCUSSION AND ANALYSIS



We use a combination of loss development, expected loss ratio and frequency/severity methods which include the following inputs, assumptions and analytical techniques:
Historical volume and severity of workers' compensation cost experience, exposure data and industry loss experience related to TriNet’s insurance policies,
inputs of WSEs’ job responsibilities and location,
estimates of future cost trends,
expected loss ratios for the latest accident year or prior accident years, adjusted for the loss trend, the effect of rate changes and other quantifiable factors, and
LDFs to project the reported losses for each accident year to an ultimate basis.
Final cost settlements may vary materially from the present estimates, particularly when payments do not occur until well into the future. In our experience, plan years related to workers' compensation programs may take 10 years or more to be fully settled.
We believe that our estimate of accrued workers' compensation costs is most sensitive to LDFs given the long reporting and paid development patterns for our workers' compensation loss costs. Our methods of estimating accrued workers' compensation costs rely on these LDFs and an estimate of future cost trend.
The following table illustrates the sensitivity of changes in the LDFs on our year end estimate of insurance costs (in millions of dollars):
Change in loss development factorChange in insurance costsChange in loss development factorChange in insurance costs
-5.0%($33)-5.0%($33)
-2.5%($18)-2.5%($19)
+2.5%$19+2.5%$20
+5.0%$38+5.0%$40
Accrued Health Insurance Costs
We sponsor and administer a number of fully insured, risk-based employee benefit plans, including group health, dental, vision and life insurance as an employer plan sponsor under section 3(5) of the ERISA. Approximately 83%84% of our group health insurance costs relate to risk-based plans in which we agree to reimburse our carriers for any claims paid within an agreed-upon per-person deductible layer up to a maximum aggregate exposure limit per policy. These deductible dollar limits and maximum limits vary by carrier and year.
Costs covered by these insurance plans generally develop on average within three to six months so insurance costs and accrued health insurance costs include estimates of reported losses and claims incurred but not yet paid (IBNP). Data is grouped and analyzed by insurance carrier.
To estimate accrued health benefits costs we use a number of inputs, assumptions and analytical techniques:
historical loss claims payment patterns and medical cost trend rates related to TriNet’s insurance policies,
current period claims costs and claims reporting patterns (completion factors), and
plan enrollment.
Medical cost trend rates are a significant factor we use in developing our accrued health insurance costs. Medical cost trends are developed through an analysis of claims incurred in prior months, provider pricing and indicators of health care utilization, including pharmacy utilization trends, and outpatient and inpatient utilization. Many factors may cause medical cost trend to vary from our estimates.

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MANAGEMENT'S DISCUSSION AND ANALYSIS



The following table illustrates the sensitivity of changes in the medical cost trend on our year end estimate of insurance costs (in millions of dollars):
Change in medical cost trendChange in insurance costsChange in medical cost trendChange in insurance costs
+3.0%$18+3.0%$21
+2.0%$12+2.0%$14
+1.0%$6+1.0%$7
-1.0%$(6)-1.0%$(7)
-2.0%$(12)-2.0%$(14)
-3.0%$(18)-3.0%$(21)
Completion factors are an actuarial estimate based on historical experience and analysis of current trends, of paid costs to carriers as a percentage of the expected ultimate costs to carriers. Many factors may cause actual claims submissions rates from our carriers to vary from our estimated completion factors, including carrier claims processing patterns, the mix of providers and the mix of electronic versus manual claims submitted to our carriers.
The following table illustrates the sensitivity of changes in completion factors on our year end estimate of insurance costs (in millions of dollars):
Change in completion factorsChange in insurance costsChange in completion factorsChange in insurance costs
-0.75%$14-0.75%$16
-0.50%$9-0.50%$11
-0.25%$5-0.25%$5
+0.25%$(5)+0.25%$(5)
+0.50%$(9)+0.50%$(11)
+0.75%$(14)+0.75%$(16)
Recent Accounting Pronouncements
Refer to Note 1 in Part II, Item 8, Financial Statements and Supplementary Data, of this Form 10-K for additional information related to recent accounting pronouncements.


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49


QUANTITATIVE AND QUALITATIVE DISCLOSURES


Item 7A. Quantitative and Qualitative Disclosures About Market Risk
Our exposure to changes in interest rates relates primarily to our investment portfolio and outstanding floating rate debt.portfolio. Changes in U.S. interest rates affect the interest earned on the Company’sCompany's cash, cash equivalents and investments and the fair value of the investments, as well as interest costs associated with our debt.
In June 2019, we entered into an interest rate collar derivative transaction with no upfront premium. We use this derivative to hedge against interest rate risk on a portion of our outstanding floating rate debt under our 2018 Credit Agreement. We have designated this derivative as a cash flow hedge. Our primary objective in purchasing and holding this derivative is to reduce our volatility of net earnings and cash flows associated with changes in the benchmark interest rate in our interest rate payments. We do not enter into any derivatives for trading or other speculative purposes.
We performed a sensitivity analysis to determine the impact a change in interest rates would have on the cash flows of the collar assuming a 100 basis point parallel shift in the current LIBOR rate. Based on the terms and remaining settlements as of December 31, 2019, a hypothetical 100 basis point decrease in one-month LIBOR across all maturities would not result in any cash payments by the Company while a hypothetical 100 basis point increase in one-month LIBOR across all maturities would result in cash receipts of $2 million.investments.
Our cash equivalents consist primarily of money market mutual funds, which are not significantly exposed to interest rate risk. Our AFS marketable securitiesinvestments are subject to interest rate risk because these securities generally include a fixed interest rate. As a result, the market values of these securities are affected by changes in prevailing interest rates. We attempt to limit our exposure to interest rate risk and credit risk by investing our investment portfolio in instruments that meet the minimum credit quality, liquidity, diversification and other requirements of our investment policy. Our AFS marketable securitiesinvestments consist of liquid, investment-grade securities. The average effective duration of our AFS marketable securities was 1.49 years at December 31, 2019. The risk of rate changes on investment balances was not significantmaterial at December 31, 2019.
At December 31, 2019, we had total outstanding long-term debt of $391 million. A 100 basis point increase or decrease in market interest rates would cause interest expense on our debt as of December 31, 2019 to increase by $11 million or to decrease by $13 million over the remaining term of the loan, respectively.


2021 and 2020.
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50


FINANCIAL STATEMENTS

Item 8. Financial Statements and Supplementary Data

TRINET GROUP, INC.
Consolidated Financial Statements



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51


FINANCIAL STATEMENTS

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Stockholders and the Board of Directors of TriNet Group, Inc.
Opinion on the Financial Statements
We have audited the accompanying consolidated balance sheets of TriNet Group, Inc. and subsidiaries (the "Company") as of December 31, 20192021 and 2018, and2020, the related consolidated statements of income and comprehensive income, stockholders’ equity, and cash flows, for each of the three years in the period ended December 31, 2019,2021, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 20192021 and 2018,2020, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2019,2021, in conformity with accounting principles generally accepted in the United States of America.
We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2019,2021, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 13, 2020,14, 2022, expressed an unqualified opinion on the Company's internal control over financial reporting.
Basis for Opinion
These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.
Critical Audit Matter
The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.
Accrued Workers’ Compensation and Health Insurance Costs - Refer to Note 1 and Note 7 to the financial statements
Critical Audit Matter Description
The Company offers its clients and worksite employees (WSEs) workers’workers' compensation insurance and health insurance coverage through fully-insured insurance policies provided by third-party insurance carriers. The Company is obligated to reimburse the insurance carriers for losses up to defined deductible limits, in accordance with the insurance policies. Accrued workers’ compensation and health insurance costs are established to provide for the estimated unpaid costs of reimbursing the carriers.
TRINET572021 FORM 10-K


FINANCIAL STATEMENTS
The accrued workers’ compensation costs include estimates of unpaid claim losses and loss adjustment expenses. The estimate isestimates are based on the Company’s historical and industry loss experience, exposure data, an estimate of future cost trends, expected loss ratios, and loss development factors. Accrued workers' compensation costs, net as of December 31, 2019,2021, were $205$190 million.

52


FINANCIAL STATEMENTS

The accrued health insurance costs include estimates for reported losses plusand estimates for claims incurred but not paid. The estimate isestimates are based on the Company’s historical claim payment patterns and medical cost trends, current period claim costs and claim reporting patterns, and plan enrollment. Accrued health insurance costs net as of December 31, 2019,2021, were $167$174 million.
Both the accrued workers’ compensation and health insurance costs are established using actuarial methods followed in the insurance industry and the Company uses third-party actuaries to develop these estimates.
Given the subjectivity of estimating the value of the accrued workers’ compensation and health insurance costs, performing audit procedures to evaluate whether accrued workers’ compensation and health insurance costs recorded for the year ended December 31, 2019,2021 required a high degree of auditor judgment and an increased extent of effort, including the need to involve our actuarial specialists.
How the Critical Audit Matter Was Addressed in the Audit
Our audit procedures related to the accrued workers’ compensation and health insurance costs included the following, among others:
We tested the effectiveness of controls related to accrued workers’ compensation and health insurance costs.
We tested the underlying data that served as inputs into the actuarial analyses, including testing historical claims and enrollment data and recreating the claim loss triangles.
With the assistance of our actuarial specialists, we evaluated the methods and key assumptions used by management to estimate the accrued workers’ compensation and health insurance costs:
Compared management’s prior-year assumptions of expected development and ultimate loss to actuals incurred during the current year to identify and evaluate potential bias in the determination of the accrued workers’ compensation and health insurance costs.
Developed an independent range of estimates of the accrued costs, utilizing loss development factors and future cost trends for accrued workers’ compensation costs and claim payment patterns and medical trend rates for accrued health insurance costs. We compared our estimated ranges to management’s estimates.

Compared management’s prior-year assumptions of expected development and ultimate loss to actuals incurred during the current year to identify and evaluate potential bias in the determination of the accrued workers’ compensation and health insurance costs.
Developed an independent range of estimates of the accrued costs, utilizing loss development factors and future cost trends for accrued workers’ compensation costs and claim payment patterns and medical trend rates for accrued health insurance costs. We compared our estimated ranges to management’s estimates.

/s/ DELOITTE & TOUCHE LLP
San Francisco, California
February 14, 2022
February 13, 2020

We have served as the Company's auditor since 2016.

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FINANCIAL STATEMENTS

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Stockholders and the Board of Directors of TriNet Group, Inc.
Opinion on Internal Control over Financial Reporting
We have audited the internal control over financial reporting of TriNet Group, Inc. and subsidiaries (the "Company”) as of December 31, 2019,2021, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2019,2021, based on criteria established in Internal Control - Integrated Framework (2013) issued by COSO.
We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements as of and for the year ended December 31, 2019,2021, of the Company and our report dated February 13, 2020,14, 2022, expressed an unqualified opinion on those financial statements and financial statement schedule.statements.
Basis for Opinion
The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.
Definition and Limitations of Internal Control over Financial Reporting
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ DELOITTE & TOUCHE LLP
San Francisco, California
February 13, 2020,

14, 2022
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54


FINANCIAL STATEMENTS

TRINET GROUP, INC.
CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME
Year Ended December 31, Year Ended December 31,
(in millions except per share data)201920182017(in millions except per share data)202120202019
Professional service revenues$530
$487
$458
Professional service revenues$639 $544 $530 
Insurance service revenues3,326
3,016
2,817
Insurance service revenues3,901 3,490 3,326 
Total revenues3,856
3,503
3,275
Total revenues4,540 4,034 3,856 
Insurance costs2,927
2,610
2,466
Insurance costs3,339 2,979 2,927 
Cost of providing services245
229
213
Cost of providing services264 262 245 
Sales and marketing190
182
187
Sales and marketing202 186 190 
General and administrative137
142
114
General and administrative176 152 137 
Systems development and programming43
49
45
Systems development and programming50 40 43 
Depreciation and amortization of intangible assets46
40
33
Depreciation and amortization of intangible assets54 47 46 
Total costs and operating expenses3,588
3,252
3,058
Total costs and operating expenses4,085 3,666 3,588 
Operating income268
251
217
Operating income455 368 268 
Other income (expense): Other income (expense):
Interest expense, bank fees and other(21)(22)(20)Interest expense, bank fees and other(20)(21)(21)
Interest income23
12
3
Interest income6 10 23 
Income before provision for income taxes270
241
200
Income before provision for income taxes441 357 270 
Income taxes58
49
22
Income taxes103 85 58 
Net income$212
$192
$178
Net income$338 $272 $212 
Other comprehensive (loss) income, net of income taxesOther comprehensive (loss) income, net of income taxes(5)— 
Comprehensive income$212
$192
$178
Comprehensive income$333 $276 $212 
 
Net income per share: Net income per share:
Basic$3.04
$2.72
$2.57
Basic$5.13 $4.03 $3.04 
Diluted$2.99
$2.65
$2.49
Diluted$5.07 $3.99 $2.99 
Weighted average shares: Weighted average shares:
Basic70
70
69
Basic66 67 70 
Diluted71
72
71
Diluted67 68 71 
See accompanying notes.

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FINANCIAL STATEMENTS

TRINET GROUP, INC.
CONSOLIDATED BALANCE SHEETS
 December 31, December 31,December 31,December 31,
(in millions, except share and per share data) 2019 2018(in millions, except share and per share data)20212020
ASSETS    ASSETS
Current assets:    Current assets:
Cash and cash equivalents $213
 $228
Cash and cash equivalents$612 $301 
Investments 68
 54
Investments135 57 
Restricted cash, cash equivalents and investments 1,180
 942
Restricted cash, cash equivalents and investments1,195 1,388 
Accounts receivable, net 9
 11
Accounts receivable, net15 18 
Unbilled revenue, net 285
 304
Unbilled revenue, net324 246 
Prepaid expenses, net 52
 48
Prepaid expenses, net67 63 
Other current assets 64
 59
Other current assets91 87 
Total current assets 1,871
 1,646
Total current assets2,439 2,160 
Restricted cash, cash equivalents and investments, noncurrent 212
 187
Restricted cash, cash equivalents and investments, noncurrent166 210 
Investments, noncurrent 125
 135
Investments, noncurrent168 138 
Property, equipment and software, net 85
 79
Property, equipment and software, net79 79 
Operating lease right-of-use asset 55
 
Operating lease right-of-use asset42 51 
Goodwill 289
 289
Goodwill294 294 
Other intangible assets, net 15
 21
Other intangible assets, net6 18 
Other assets 96
 78
Other assets115 93 
Total assets $2,748
 $2,435
Total assets$3,309 $3,043 
Liabilities and stockholders' equity    Liabilities and stockholders' equity
Current liabilities:    Current liabilities:
Accounts payable and other current liabilities $31
 $45
Accounts payable and other current liabilities$86 $50 
Long-term debt 22
 22
Long-term debt 22 
Client deposits 44
 56
Client deposits and other client liabilitiesClient deposits and other client liabilities97 134 
Accrued wages 391
 352
Accrued wages369 309 
Accrued health insurance costs, net 167
 135
Accrued health insurance costs, net174 172 
Accrued workers' compensation costs, net 61
 67
Accrued workers' compensation costs, net55 59 
Payroll tax liabilities and other payroll withholdings 901
 729
Payroll tax liabilities and other payroll withholdings929 1,095 
Operating lease liabilities 17
 
Operating lease liabilities11 11 
Insurance premiums and other payables 9
 19
Insurance premiums and other payables18 18 
Total current liabilities 1,643
 1,425
Total current liabilities1,739 1,870 
Long-term debt, noncurrent 369
 391
Long-term debt, noncurrent495 348 
Accrued workers' compensation costs, noncurrent, net 144
 158
Accrued workers' compensation costs, noncurrent, net135 138 
Deferred taxes 61
 68
Deferred taxes11 22 
Operating lease liabilities, noncurrent 48
 
Operating lease liabilities, noncurrent41 49 
Other non-current liabilities 8
 18
Other non-current liabilities7 
Total liabilities 2,273
 2,060
Total liabilities2,428 2,436 
Commitments and contingencies (see Note 10)    
Commitments and contingencies (see Note 10)
Commitments and contingencies (see Note 10)
00
Stockholders' equity:    Stockholders' equity:
Preferred stock 
 
Preferred stock — 
($0.000025 par value per share; 20,000,000 shares authorized; no shares issued or outstanding at December 31, 2019 and 2018)    
($0.000025 par value per share; 20,000,000 shares authorized; 0 shares issued or outstanding at December 31, 2021 and 2020)($0.000025 par value per share; 20,000,000 shares authorized; 0 shares issued or outstanding at December 31, 2021 and 2020)
Common stock and additional paid-in capital 694
 641
Common stock and additional paid-in capital808 747 
($0.000025 par value per share; 750,000,000 shares authorized; 69,065,491 and 70,596,559 shares issued and outstanding at December 31, 2019 and 2018, respectively)    
Accumulated deficit (219) (266)
($0.000025 par value per share; 750,000,000 shares authorized; 65,968,224 and 66,456,663 shares issued and outstanding at December 31, 2021 and 2020, respectively)($0.000025 par value per share; 750,000,000 shares authorized; 65,968,224 and 66,456,663 shares issued and outstanding at December 31, 2021 and 2020, respectively)
Retained earnings (Accumulated deficit)Retained earnings (Accumulated deficit)74 (144)
Accumulated other comprehensive (loss) incomeAccumulated other comprehensive (loss) income(1)
Total stockholders' equity 475
 375
Total stockholders' equity881 607 
Total liabilities & stockholders' equity $2,748
 $2,435
Total liabilities & stockholders' equity$3,309 $3,043 
See accompanying notes.

TRINET612021 FORM 10-K

56


FINANCIAL STATEMENTS

TRINET GROUP, INC.
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
Year Ended December 31,
(in millions)202120202019
Total Stockholders' Equity, beginning balance$607 $475 $375 
Common Stock and Additional Paid-In Capital:
Beginning balance747 694 641 
Issuance of common stock from exercise of stock options1 — 
Issuance of common stock for employee stock purchase plan10 
Stock based compensation expense50 44 42 
Ending balance808 747 694 
Retained Earnings (Accumulated Deficit):
Beginning balance(144)(219)(266)
Net income338 272 212 
Cumulative effect of accounting change (1)— 
Repurchase of common stock(94)(178)(140)
Awards effectively repurchased for required employee withholding taxes(26)(18)(25)
Ending balance74 (144)(219)
Accumulated Other Comprehensive (Loss) Income:
Beginning balance4 — — 
Other comprehensive (loss) income(5)— 
Ending balance(1)— 
Total Stockholders' Equity, ending balance$881 $607 $475 
 Year Ended December 31,
(in millions)201920182017
Total Stockholders' Equity, beginning balance$375
$206
$35
Common Stock and Additional Paid-In Capital:   
Beginning balance641
583
535
Issuance of common stock from exercise of stock options2
7
11
Issuance of common stock for employee stock purchase plan9
7
5
Stock based compensation expense42
44
32
Ending balance694
641
583
    
Accumulated Deficit:   
Beginning balance(266)(377)(500)
Net income212
192
178
Cumulative effect of accounting change
2

Repurchase of common stock(140)(61)(44)
Awards effectively repurchased for required employee withholding taxes(25)(22)(11)
Ending balance(219)(266)(377)
Total Stockholders' Equity, ending balance$475
$375
$206

See accompanying notes.

TRINET622021 FORM 10-K

57


FINANCIAL STATEMENTS

TRINET GROUP, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
Year Ended December 31, Year Ended December 31,
(in millions)201920182017(in millions)202120202019
Operating activities Operating activities
Net income$212
$192
178
Net income$338 $272 212 
Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization57
46
35
Depreciation and amortization82 67 57 
Noncash lease expense16


Stock based compensation41
44
32
Stock based compensation50 43 41 
Amortization of ROU asset, lease modification and impairmentAmortization of ROU asset, lease modification and impairment12 15 16 
Accretion of discount rate on lease liabilitiesAccretion of discount rate on lease liabilities2 — 
Amortization of (premium) discount on investmentsAmortization of (premium) discount on investments3 (1)
Deferred income taxes(7)1
(25)Deferred income taxes(9)(42)(7)
Amortization of (premium) discount of investments(1)

Changes in operating assets and liabilities: Changes in operating assets and liabilities:
Accounts receivable, net5
10
(14)Accounts receivable, net3 (7)
Unbilled revenue, net19
(14)(4)Unbilled revenue, net(78)39 19 
Prepaid expenses, net(5)(9)28
Prepaid expenses, net(5)(12)(5)
Accounts payable and other current liabilities(15)(8)23
Accounts payable and other current liabilities33 19 (15)
Client deposits(12)4
(4)
Client deposits and other client liabilitiesClient deposits and other client liabilities(37)87 (12)
Accrued wages40
23
26
Accrued wages60 (82)40 
Accrued health insurance costs, net32
(16)22
Accrued health insurance costs, net2 32 
Accrued workers' compensation costs, net(20)(7)9
Accrued workers' compensation costs, net(7)(9)(20)
Payroll taxes payable and other payroll withholdings172
(305)294
Payroll taxes payable and other payroll withholdings(166)194 172 
Operating lease liabilities(17)

Operating lease liabilities(13)(19)(17)
Other assets(34)(64)(11)Other assets(50)(38)(34)
Other liabilities(12)(1)17
Other liabilities(2)11 (12)
Net cash (used in) provided by operating activities471
(104)606
Net cash provided by operating activitiesNet cash provided by operating activities218 546 471 
Investing activities Investing activities
Purchases of marketable securities(302)(258)
Purchases of marketable securities(444)(327)(302)
Proceeds from sale and maturity of marketable securities159
101
14
Proceeds from sale and maturity of marketable securities349 224 159 
Acquisitions of property and equipment(45)(43)(38)Acquisitions of property and equipment(40)(36)(45)
OtherOther (12)— 
Net cash used in investing activities(188)(200)(24)Net cash used in investing activities(135)(151)(188)
Financing activities Financing activities
Repurchase of common stock(140)(61)(44)Repurchase of common stock(94)(178)(140)
Proceeds from issuance of common stock11
14
16
Proceeds from issuance of common stock11 10 11 
Awards effectively repurchased for required employee withholding taxes(25)(22)(11)Awards effectively repurchased for required employee withholding taxes(26)(18)(25)
Proceeds from issuance of notes payable, net
210

Payments for extinguishment of debt
(204)
Repayment of debt(22)(22)(38)
Net cash used in financing activities(176)(85)(77)
Net (decrease) increase in cash and cash equivalents, unrestricted and restricted107
(389)505
Proceeds from issuance of 2029 NotesProceeds from issuance of 2029 Notes500 — — 
Repayment of borrowingsRepayment of borrowings(370)(22)(22)
Payment of debt issuance costsPayment of debt issuance costs(7)— — 
Payment of long-term financing costsPayment of long-term financing costs(2)— — 
Draw down from revolving credit facilityDraw down from revolving credit facility 234 — 
Repayment of borrowings under revolving credit facilityRepayment of borrowings under revolving credit facility (234)— 
Net cash provided by (used in) financing activitiesNet cash provided by (used in) financing activities12 (208)(176)
Net increase in cash and cash equivalents, unrestricted and restrictedNet increase in cash and cash equivalents, unrestricted and restricted95 187 107 
Cash and cash equivalents, unrestricted and restricted: Cash and cash equivalents, unrestricted and restricted:
Beginning of period1,349
1,738
1,233
Beginning of period1,643 1,456 1,349 
End of period$1,456
$1,349
$1,738
End of period$1,738 $1,643 $1,456 
 
Supplemental disclosures of cash flow information Supplemental disclosures of cash flow information
Interest paid$19
$17
16
Interest paid$12 $16 19 
Income taxes paid, net62
49
2
Income taxes paid, net129 123 62 
Supplemental schedule of noncash investing and financing activities 
Payable for purchase of property and equipment$2
$3
2
See accompanying notes.


TRINET632021 FORM 10-K

58


FINANCIAL STATEMENTS

TRINET GROUP, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
NOTE 1. DESCRIPTION OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES
Description of Business
TriNet Group, Inc. (TriNet, or the Company, we, our and us), a professional employer organization, provides comprehensive human resources solutions for small to midsizeand medium-size businesses under a co-employment model. These HR solutions include multi-state payroll processing and tax administration, employee benefits programs, including health insurance and retirement plans, workers' compensation insurance and claims management, employment and benefit law compliance, and other HR-related services. Through the co-employment relationship, we are the employer of record for certain employment-related administrative and regulatory purposes for the worksite employees (WSEs), including:
compensation through wages and salaries,
certain employer payroll-related tax payments,
employee payroll-related tax withholdings and payments,
employee benefit programs, including health and life insurance, and others, and
workers' compensation coverage.
Our clients are responsible for the day-to-day job responsibilities of the WSEs.
We operate in 1 reportable segment. All of our service revenues are generated from external clients. Less than 1% of our revenue is generated outside of the United States.U.S.
Basis of Presentation
Our consolidated financial statements are prepared in conformity with generally accepted accounting principles in the United States of America (GAAP). All intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates
The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect certain reported amounts and related disclosures.
These estimates are based on historical experience and on various other assumptions that we believe to be reasonable from the facts available to us. Some of the assumptions are highly uncertain at the time of estimation. To the extent actual experience differs from the assumptions used, our consolidated financial statements could be materially affected.
Revenue Recognition
On January 1, 2018, we adopted Accounting Standards Codification Topic 606 (ASC Topic 606) using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under ASC Topic 606, while the comparative prior period amounts are not restated and continue to be reported in accordance with statements previously accounted for under Accounting Standards Codification Topic 605.
Upon adoption of ASC Topic 606, we recorded a $2 million cumulative effect adjustment to opening retained earnings as of January 1, 2018. Impacts from adoption of the new standard on our revenue recognition include:
Our annual service contracts with our clients that are cancellable with 30 days' notice are considered 30-day contracts under the new standard;
Professional service revenues are recognized on an output basis which results in recognition at the time payroll is processed;

59


FINANCIAL STATEMENTS

Our non-refundable set up fees are no longer deferred but accounted for as part of our transaction price and are allocated among professional service revenues and insurance services revenues; and
The majority of sales commissions related to onboarding new clients that were previously expensed are capitalized as contract assets and amortized over the estimated client life.
Revenues are recognized when the promised services are transferred to our clients, in an amount that reflects the consideration that we expect to receive in exchange for services. We generate all of our revenue from contracts with clients. We disaggregate revenues into professional services revenues and insurance services revenues as reported on the consolidated statements of income and comprehensive income. Generally,In the majority of our contracts, both the client and the Company may terminate the contract without penalty by providing a 30-day notice.
Performance Obligations
At contract inception, we assess the services promised in our contracts with clients and identify a performance obligation for each distinct promise to transfer to the client a service or bundle of services. We determined that the following distinct services represent separate performance obligations:
Payroll and payroll tax processing,
Health benefits services, and
TRINET642021 FORM 10-K


FINANCIAL STATEMENTS
Workers’ compensation services.services, and
A right to receive future services at a discount through our Recovery Credit program.
Payroll and payroll tax processing performance obligations include services to process payroll and payroll tax-related transactions on behalf of our clients. Revenues associated with this performance obligation are reported as professional service revenues and recognized using an output method in which the promised services are transferred when a client's payroll is processed by us and WSEs are paid. Professional service revenues are stated net of the gross payroll and payroll tax amounts funded by our clients. Although we assume the responsibilities to process and remit the payroll and payroll related obligations, we do not assume employment-related responsibilities such as determining the amount of the payroll and related payroll obligations. As a result, we are the agent in this arrangement for revenue recognition purposes.
Health benefits and workers' compensation services include performance obligations to provide TriNet-sponsored health benefits and workers' compensation insurance coverage through insurance policies provided by third-party insurance carriers and settle high deductible amounts on those policies. Revenues associated with these performance obligations are reported as insurance services revenues and are recognized using the output method over the period of time that the client and WSEs are covered under TriNet-sponsored insurance policies.
We control the selection of health benefits and workers' compensation coverage made available. As a result, we are the principal in this arrangement for revenue recognition purposes and insurance services revenues are reported gross.
In April 2020, we created our Recovery Credit program to assist in the economic recovery of our existing SMB clients and enhance our ability to retain these clients. Under this one-time program eligible clients will receive reductions against fees for future services, accounted for as a discount, over the following 12 months. This option to renew future services at a discount represents a material right and is accounted for as a performance obligation (Recovery Credit). This performance obligation will be satisfied when the clients have successfully renewed the services contracts and the future services are transferred. 
The consideration we receive that is allocated to this performance obligation is deferred as an unsatisfied performance obligation and is included in client deposits and other client liabilities on the balance sheet. The amount of consideration we defer each period is dependent on the timing of when eligible clients will receive the Recovery Credit, which is subject to a limit on the total amount of $145 million.
The change in the balance of the Recovery Credit unsatisfied performance obligation was as follows:
(in millions)20212020
Balance at beginning of period$92 $— 
(+) Accruals17 128 
(-) Distributions to clients(86)(36)
Balance at end of period$23 $92 
We generally charge new customersclients a nominal upfront non-refundable fee to recover our costs to set them up on our TriNet platform for payroll processing and other administrative services, such as benefit enrollments. These fees are accounted for as part of our transaction price and are allocated among the performance obligations based on their relative standalone selling prices.
Client Deposits and Other Client Liabilities
Client deposits and other client liabilities represents our contractual commitments and payables to clients, including indemnity guarantee payments received from clients, amounts prefunded by clients for their payroll and related taxes and other withholding liabilities before payroll is processed or due for payment, as well as service fee consideration received for unsatisfied performance obligations of $23 million.
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FINANCIAL STATEMENTS
Variable Consideration and Pricing Allocation
Our contracts with customersclients generally do not include any variable consideration. However, from time to time, we may offer incentive credits to our clients considered to be variable consideration including incentiveconsideration. Incentive credits issued related to contract renewals. Incentive creditsrenewals are recorded as a reduction to revenue as part of the transaction price at contract inception when there is a basis to reasonably estimate the amount of the incentive credit and we reduce the full amount of the credit only to the extent that it is probable that a significant reversal of any incremental revenue will not occur. These incentive credits are allocated among the performance obligations based on their relative standalone selling prices.

60


FINANCIAL STATEMENTS

Credits based on the performance of our insurance costs are recorded as a reduction to insurance services revenues and included in client deposits and other client liabilities on the balance sheet. In 2021, we accrued $25 million under our 2021 Credit Program, payable within 12 months to eligible clients as of March 31, 2021, related to the expected performance of our health insurance costs for the year.
We allocate the total transaction price to each performance obligation based on the estimated relative standalone selling prices of the promised services underlying each performance obligation. The transaction price for the payroll and payroll tax processing performance obligations is determined upon establishment of the contract that contains the final terms of the arrangement, including the description and price of each service purchased. The estimated service fee is calculateddetermined based on observable inputs and include the following key assumptions: target profit margin, pricing strategies including the mix of services purchased and competitive factors, and client and industry specifics.
The transaction price for health benefits insurance and workers' compensation insurance performance obligations is determined during the new client on-boarding and enrollment processes based on the types of benefits coverage the clients and WSEs have elected and the applicable risk profile of the client. We estimate our service fees based on actuarial forecasts of our expected insurance premiums and loss sensitive premium costs, and amounts to cover our costs to administer these programs.
We require our clients to prefund payroll and related taxes and other withholding liabilities before payroll is processed or due for payment. Under the provision of our contracts with clients, we generally will process the payment of a client’s payroll only when the client successfully funds the amount required. As a result, there is no financing arrangement for the contracts, however,contracts. However, certain contracts to provide payroll and payroll tax processing services permit the client to pay certain payroll tax components ratably over a 12-month periodperiods of up to 12 months rather than as payroll tax is otherwise determined on wages paid,and due, which may be considered a significant financing arrangement under ASC Topic 606. However, as the period between our performing the service under the contract and when the client pays for the service is less than one year, we have elected, as a practical expedient, not to adjust the transaction price.
Unbilled Revenue
We recognize WSE payroll and payroll tax liabilities in the period in which the WSEs perform work. When clients' pay periods cross reporting periods, we accrue the portion of the unpaid WSE payroll where we assume, under state regulations, the obligation for the payment of wages and the corresponding payroll tax liabilities associated with the work performed prior to period-end. These estimated payroll and payroll tax liabilities are recorded in accrued wages. The associated receivables, including estimated revenues, offset by advance collections from clients and an allowance for credit losses, are recorded as unbilled revenue. As of December 31, 20192021 and 2018,2020, advance collections included in unbilled revenue were $95$8 million and $23$24 million, respectively.
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FINANCIAL STATEMENTS
Contract Costs
We recognize as deferred commission expense the incremental cost to obtain a contract with a client for certain components under our commission plans for sales representatives and channel partners that are directly related to new customersclients onboarded as we expect to recover these costs through future service fees. Such assets are amortized over the estimated average client tenure. These commissions are earned on the basis of the revenue generated from payroll and payroll tax processing performance obligations. When the commission on a renewal contract is not commensurate with the commission on the initial contract, any incremental commission will be capitalized and amortized over the estimated average client tenure. If the commission for both the initial contract and renewal contracts are commensurate, such commissions are expensed in the contract period. The below table summarizes the amounts capitalized and amortized during the years ended December 31, 20192021, 2020 and 2018:2019:
 Year Ended December 31,
 20192018
(in millions)CapitalizedAmortizedCapitalizedAmortized
Deferred commission expense$45
$10
$33
$2

Year Ended December 31,
(in millions)202120202019
Deferred commission expense:
Capitalized$28 $29 $45 
Amortized25 19 10 
Certain commission plans pay a commission on estimated professional service revenues over the first 12 months of the contract with clients. The portion of commission paid in excess of the actual commission earned in that period is recorded as prepaid commission. When the prepaid commission is considered earned, it is classified as a deferred commission expense and subject to amortization. We do not have material contract liabilities as of December 31, 20192021 and 2018.

61


FINANCIAL STATEMENTS

2020.
Insurance Costs
Our fully insured insurance plans are provided by third-party insurance carriers under risk-based or guaranteed-cost insurance policies. Under risk-based policies, we agree to reimburse our carriers for any claims paid within an agreed-upon per-person deductible layer up to a maximum aggregate exposure limit per policy. These deductible dollar limits and maximum limits vary by carrier and year. Under guaranteed-cost policies, our carriers establish the premiums and we are not responsible for any deductible.
Insurance costs include insurance premiums for coverage provided by insurance carriers, payments for claim costs and other risk management services, reimbursement of claims payments made by insurance carriers or third-party administrators below a predefined deductible limit, and changes in accrued costs related to contractual obligations with our workers' compensation and health benefit insurance.carriers.
At policy inception, annual workers' compensation premiums are estimated by the insurance carriers based on projected wages over the duration of the policy period and the risk categories of the WSEs. We initially pay premiums based on these estimates. As actual wages are realized, premium expense recorded may differ from estimated premium expense, creating an asset or liability throughout the policy year. Such asset or liability is reported on our consolidated balance sheets as prepaid expenses or insurance premiums and other payables, respectively.
Accrued Workers' Compensation Costs
We have secured fully insured workers' compensation insurance policies with insurance carriers to administer and pay claims for our clients and WSEs. We are responsible for reimbursing the insurance carriers for losses up to $1 million per claim occurrence (deductible layer). Insurance carriers are responsible for administering and paying claims. We are responsible for reimbursing each carrier up to a deductible limit per occurrence. Accrued workers' compensation costs represent our liability to reimburse insurance carriers for our share of their losses and loss adjustment expenses. These accrued costs are established to provide for the estimated ultimate costs of paying claims within the deductible layer in accordance with workers' compensation insurance policies. These accrued costs include estimates for reported and incurred but not reported (IBNR) losses, accrued costs on reported claims, and expenses associated with processing and settling the claims. In establishing these accrued costs, we use an external actuary to provide an estimate of undiscounted future cash payments that would be made to settle the claims based upon:
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FINANCIAL STATEMENTS
historical loss experience, exposure data, and industry loss experience related to TriNet’s insurance policies,
inputs including WSE job responsibilities and location,
historical volume and severity of workers' compensation claims,
an estimate of future cost trends,
expected loss ratios for the latest accident year or prior accident years, adjusted for the loss trend, the effect of rate changes and other quantifiable factors, and
loss development factors to project the reported losses for each accident year to an ultimate basis.
We assess the accrued workers' compensation costs on a quarterly basis. For each reporting period, changes in the actuarial methods and assumptions resulting from changes in actual claims experience and other trends are incorporated into the accrued workers' compensation costs. Adjustments to previously established accrued costs estimates are reflected in the results of operations for the period in which the adjustment is identified. Such adjustments could be significant, reflecting any variety of new adverse or favorable trends. Accordingly, final claim settlements may vary materially from the present estimates, particularly when those payments may not occur until well into the future. In our experience, plan years related to workers' compensation programs may take ten years or more to be settled.
We do not discount accrued workers' compensation costs. Costs expected to be paid within one year are recorded as accrued workers' compensation costs. Costs expected to be paid beyond one year are included in accrued workers' compensation costs, less current portion.

62


FINANCIAL STATEMENTS

We have collateral agreements with various insurance carriers where either we retain custody of funds in trust accounts which we record as restricted cash and cash equivalents, or remit funds to carriers. Collateral whether held by us, or the carriers, is used to settle our insurance and claim deductible obligations to them. Collateral requirements are established at the policy year and are re-assessed by each carrier annually. Based on the results of each assessment, additional collateral may be required for or paid to the carrier or collateral funds may be released or returned to the Company. In instances where we pay collateral to carriers and the agreement permits net settlement of obligations against collateral held, we record our accrued costs net of that collateral (Carrier Collateral Offset). We offset carrierCarrier Collateral Offset against our obligation due within the next 12 months before applying against long-term obligations. Collateral balances in excess of accrued costs are recorded in other assets.
Accrued Health Insurance Costs
We sponsor and administer a number of fully insured, risk-based employee benefit plans, including group health, dental, and vision as an employer plan sponsor under section 3(5) of the ERISA. In 2019, a2021, the majority of our group health insurance costs related to risk-based plans. Our remaining group health insurance costs were for guaranteed-cost policies.
Accrued health insurance costs are established to provide for the estimated unpaid costs of reimbursing the carriers for paying claims within the deductible layer in accordance with risk-based health insurance policies. These accrued costs include estimates for reported losses, plus estimates for claims incurred but not paid. We assess accrued health insurance costs regularly based upon external actuarial studies that include other relevant factors such as current and historical claims payment patterns, plan enrollment and medical trend rates.
In certain carrier contracts we are required to prepay the expected claims activity for subsequent periods. These prepaid balances by agreement permit net settlement of obligations and offset the accrued health insurance costs. As of December 31, 20192021 and 2018,2020, prepayments and miscellaneous receivables offsetting accrued health insurance costs were $39$54 million and $33$49 million, respectively. When the prepaid amount is in excess of our recorded liability the net asset position is included in prepaid expenses. As of December 31, 20192021 and 2018,2020, accrued health insurance costs offsetting prepaid expenses were $52$79 million and $50$58 million,, respectively.
Derivative Instruments
In June 2019, we entered into an interest rate collar derivative transaction with no upfront premium to mitigate the risk of changes in interest rates on our floating rate debt. This derivative, for which we have elected and qualify for cash flow hedge accounting, is recorded on the balance sheet at its fair value. Changes in the derivative’s fair value are recorded each period in other comprehensive income until the underlying monthly interest payment and the corresponding portion of the derivative are settled, at which point changes in fair value are recorded in net income. We evaluate this derivative each quarter to determine that it remains effective by comparing the remaining expected cash flows of the derivative against the related expected interest payments of our floating rate debt. We do not enter into any derivatives for trading or other speculative purposes.
Leases
We adopted ASU 2016-02 - Leases (ASC 842) effective January 1, 2019 using the optional transition method, under which we recognized the cumulative effects of initially applying the standard as an adjustment to the opening balance of retained earnings on January 1, 2019 with unchanged comparative periods. As part of this adoption, we elected the following practical expedients:
not to reassess 1) whether any contracts that existed prior to adoption have or contain leases, 2) the classification of our existing leases or 3) initial direct costs for existing leases,
to use the practical expedient of using hindsight to determine the lease terms and evaluate any impairments in right-of-use assets upon transition, and
not separately record non-lease and lease components for all leases in which we act as a lessee.

TRINET682021 FORM 10-K
63


FINANCIAL STATEMENTS

Leases
We determine if a new contractual arrangement is a lease at contract inception. If a contract contains a lease, we evaluate whether it should be classified as an operating or a finance lease. If applicable as a lease, we record our lease liabilities and ROUright-of-use (ROU) assets based on the future minimum lease payments over the lease term and only include options to renew a lease in the future minimum lease payments if it is reasonably certain that we will exercise that option. For certain leases with original terms of twelve months or less we recognize the lease expense as incurred and we do not recognize lease liabilities and ROU assets.
We measure our lease liabilities based on the future minimum lease payments discounted over the lease term. We determine our discount rate at lease inception using our incremental borrowing rate, which is based on our outstanding term debts that are collateralized by certain corporate assets. As of December 31, 2019,2021 and 2020, the weighted-average rate used in discounting the lease liability was 4.4%.3.9% and 4.0%, respectively.
We measure our ROU assets based on the associated lease liabilities adjusted for any lease incentives such as tenant improvement allowances and classify operating ROU assets in other assets in our consolidated balance sheet.sheets. For operating leases, we recognize expense for lease payments on a straight-line basis over the lease term.
Cash and Cash Equivalents
Cash and cash equivalents include bank deposits and short-term, highly liquid investments. Investments with original maturity dates of three months or less are considered cash equivalents.
Restricted Cash, Cash Equivalents and Investments
Restricted cash, cash equivalents and investments presented on our consolidated balance sheets include:
cash and cash equivalents in trust accounts functioning as security deposits for our insurance carriers,
payroll funds collected representing cash collected in advance from clients which we designate as restricted for the purpose of funding WSE payroll and payroll taxes and other payroll related liabilities, and
amounts held in trust for current and future premium and claim obligations with our insurance carriers, which amounts are held in trust according to the terms of the relevant insurance policies and by the local insurance regulations of the jurisdictions in which the policies are in force.
Investments
Our investments are primarily classified as available-for-sale and are carried at estimated fair value.
Unrealized gains and losses are reported as a component of accumulated other comprehensive income, net of deferred income taxes. The amortized cost of debt investments is adjusted for amortization of premiums and accretion of discounts from the date of purchase to the earliest call date for premiums or the maturity date for discounts. Such amortization is included in interest income as an addition to or deduction from the coupon interest earned on the investments. We use the specific identification method to determine realized gains and losses on the sale of available-for-sale securities. Realized gains and losses are included in interest income in the accompanying consolidated statements of income and comprehensive income.
We assess our investments for an other-than-temporary impairment loss due to a decline in fair value or other market conditions.credit impairment. We review several factors to determine whether aan unrealized loss is other than temporary,credit related, such as the length and extent of the fair value decline, the financial condition and near-termfuture prospects of the issuer and whether we haveissuer. To the intentextent that a security's amortized cost basis exceeds the present value of the cash flows expected to be collected from the security, an allowance for credit losses will be recognized. If management intends to sell or will more likely than not be required to sell the security before the securities'any anticipated recovery, which maya write down will be at maturity. If management determines that a security is impaired under these circumstances, the impairment recognized in earnings is measured as the entire difference between the amortized cost and the then-current fair value.
We have investments within our unrestricted and our restricted accounts. Unrestricted investments are recorded on the balance sheet as current or noncurrent based upon the remaining time to maturity, and investments subject to restrictions are classified as current or noncurrent based on the expected payout of the related liability.

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FINANCIAL STATEMENTS

Comprehensive Income
Comprehensive income consists of net income and other comprehensive income. Other comprehensive (loss) income includes those gains and losses included in comprehensive income, but excluded from net income, in accordance with GAAP. Other comprehensive (loss) income is comprised of immaterial net unrealized gains or losses arising on available-for-sale investments, net of deferred taxes.
Fair Value of Financial Instruments
Fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or a liability.
Our financial assets recorded at fair value on a recurring basis are comprised of cash equivalents, available-for-sale marketable securities and certificates of deposits. We measure certain financial assets at fair value for disclosure purposes, as well as on a nonrecurring basis when they are deemed to be other-than-temporarily impaired. Our other current financial assets and liabilities have fair values that approximate their carrying value due to their short-term nature.
Assets and liabilities recorded at fair value are measured and classified in accordance with a three-tier fair value hierarchy based on the observability of the inputs available in the market to measure fair value, summarized as follows:
Level 1—observable inputs for identical assets or liabilities, such as quoted prices in active markets,
Level 2—inputs other than the quoted prices in active markets that are observable either directly or indirectly,
Level 3—unobservable inputs in which there is little or no market data, which requires that we develop our own assumptions.
The fair value hierarchy requires us to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. We classify our cash equivalents, investments and long-term debt in the fair value hierarchy based on the lowest level input that is significant to the fair value measurement in its entirety.
Accounts Receivable
Our accounts receivable represents outstanding gross billings to clients, net of an allowance for doubtful accounts.estimated credit losses. We require our clients to prefund payroll and related liabilities before payroll is processed or due for payment. If a client fails to fund payroll or misses the funding cut-off, at our sole discretion, we may pay the payroll and the resulting amounts due to us are recognized as accounts receivable. When client payment is received in advance of our performance under the contract, such amount is recorded as client deposits. We establish an allowance for doubtful accountscredit losses based on historical experience,the credit quality of clients, current economic conditions, the age of the accounts receivable balances, credit quality of clients, current economic conditionshistorical experience, and other factors that may affect clients’ ability to pay, and charge-off amounts against the allowance when they are deemed uncollectible. The allowance was immaterial at December 31, 20192021 and $1 million at December 31, 2018.2020.
Property, Equipment and Software
We record property and equipment at historical cost and compute depreciation using the straight-line method over the estimated useful lives of the assets or the lease terms, generally three years to five years for software and office equipment, five years to seven years for furniture and fixtures, and the shorter of the asset life or the remaining lease term for leasehold improvements. We expense the cost of maintenance and repairs as incurred and capitalize leasehold improvements.
We capitalize internal and external costs incurred to develop internal-use computer software during the application development stage. Application development stage costs include software configuration, coding, and installation. Capitalized costs are amortized on a straight-line basis over the estimated useful life, typically ranging from three years to five years, commencing when the software is placed into service. We expense costs incurred during the preliminary project stage, as well as general and administrative, overhead, maintenance and training costs, and costs that do not add functionality to existing systems.
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We periodically assess the likelihood of unsuccessful completion of projects in progress, as well as monitor events or changes in circumstances, which might suggest that impairment has occurred and recoverability should be evaluated. An impairment loss is recognized if the carrying amount of the asset is not recoverable and exceeds the future net cash flows expected to be generated by the asset.

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FINANCIAL STATEMENTS

We evaluate our long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. An asset is considered impaired if the carrying amount exceeds the undiscounted future net cash flows the asset is expected to generate. An impairment charge is recognized for the amount by which the carrying amount of the assets exceeds its fair value. Assets to be disposed of are reported at the lower of the carrying amount or fair value, less selling costs.
Goodwill and Other Intangible Assets
Our goodwill and identifiable intangible assets with indefinite useful lives are not amortized, but are tested for impairment on an annual basis or when an event occurs or circumstances change in a way to indicate that there has been a potential decline in the fair value of the reporting unit. Goodwill impairment is determined by comparing the estimated fair value of the reporting unit to its carrying amount, including goodwill. All goodwill is associated with 1 reporting unit within our 1 reportable segment.
Annually, we perform a qualitative assessment to determine whether it is more likely than not that the fair value of the reporting unit has declined below its carrying value. This assessment considers various financial, macroeconomic, industry, and reporting unit specific qualitative factors. We perform our annual impairment testing in the fourth quarter. Based on the results of our reviews, 0no impairment loss was recognized in the results of operations for the years ended December 31, 2019, 20182021, 2020 and 2017.2019.
Intangible assets with finite useful lives are amortized over their respective estimated useful lives ranging from two yearsone year to ten years using either the straight-line method or an accelerated method. Intangible assets are reviewed for indicators of impairment at least annually and evaluated for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Based on the results of our reviews, 0we recognized a $7 million impairment loss wascharge for customer contract lists for the year ended December 31, 2021. There were no impairment charges recognized in the results of operations for the years ended December 31, 2019, 20182020 and 2017.2019.
Advertising Costs
We expense the costs of producing advertisements at the time production occurs, and expense the cost of running advertisements in the period in which the advertising space or airtime is used as sales and marketing expense. Advertising costs were $18$21 million, $17$19 million, and $8$18 million for the years ended December 31, 2019, 20182021, 2020 and 2017,2019, respectively.
Stock Based Compensation
Our stock based awards to employees include time based and performance based restricted stock units and restricted stock awards, stock options and an employee stock purchase plan. Compensation expense associated with restricted stock units and restricted stock awards is based on the fair value of common stock on the date of grant. Compensation expense associated with stock options and employee stock purchase plan are based on the estimated grant date fair value method using the Black-Scholes option pricing model. Expense is recognized using a straight-line amortization method over the respective vesting period for awards that are ultimately expected to vest, with adjustments to expense recognized in the period in which forfeitures occur.
Income Taxes
We account for our provision for income taxes using the asset and liability method, under which we recognize income taxes payable or refundable for current year and deferred tax assets and liabilities for the future tax effect of events that have been recognized in either our financial statements or tax returns. We measure our current and deferred tax assets and liabilities based on provision of enacted tax laws of those jurisdictions in which we operate. The effect of changes in tax laws and regulations, or interpretations, is recognized in our consolidated financial statements in the period that includes the enactment date.

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FINANCIAL STATEMENTS

We recognize deferred tax assets and liabilities based on temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and amounts used for income tax purposes, as well as the expected benefits of using net operating loss and other carryforwards. We are required to establish a valuation allowance when it is determined more likely than not that the deferred tax assets will not be realized. Provision for income taxes may change when estimates used in determining valuation allowances change or when receipt of new information indicates the need for adjustment in valuation allowances. Changes in valuation allowances are reflected as a component of the provision for income taxes in the period the change is enacted.
We recognize a reserve for uncertain tax positions taken or expected to be taken in a tax return when it is concluded that tax positions are not more likely than not to be sustained upon examination by taxing authorities, including resolution of any related appeals or litigation processes, based on the technical merits of the positions. Assumptions, judgment and the use of estimates are required in determining if the more likely than not standard has been met when developing the provision for income taxes and in determining the expected benefit. The tax benefits of the position recognized in the financial statements are then measured based on the largest amount of benefit that is greater than 50% likely to be realized upon settlement with a taxing authority. Unrecognized tax benefits due to tax uncertainties that do not meet the minimum probability threshold are included as other liabilities and are charged to earnings in the period that such determination is made. We recognize interest and penalties related to uncertain tax positions as a component of income tax expense. Accrued interest and penalties are included in other non-current liabilities on the consolidated balance sheet.
Concentrations of Credit Risk
Financial instruments subject to concentrations of credit risk include cash, cash equivalents and investments (unrestricted and restricted), accounts receivable, and amounts due from insurance carriers. We maintain these financial assets principally in domestic financial institutions. We perform periodic evaluations of the relative credit standing of these institutions. Our exposure to credit risk in the event of default by the financial institutions holding these funds is limited to amounts currently held by the institution in excess of insured amounts.
Under the terms of professional services agreements, clients agree to maintain sufficient funds or other satisfactory credit at all times to cover the cost of their current payroll, all accrued paid time off, vacation or sick leave balances, and other vested wage and benefit obligations for all their work site employees. We generally require payment from our clients on or before the applicable payroll date.
For certain clients, we require an indemnity guarantee payment (IGP) supported by a letter of credit, bond, or a certificate of deposit from certain financial institutions. The IGP typically equals the total payroll and service fee for one average payroll period.
No client accounted for more than 10% of total revenues in the years ended December 31, 2019, 20182021, 2020 and 2017.2019. Bad debt expense, net of recoveries was $1 million,immaterial for each of the years ended December 31, 2019, 20182021, 2020 and 2017.2019.
Recent Accounting Pronouncements
Recently adopted accounting guidance
Leases -In February 2016, the FASB issued ASC 842, which replaced existing lease guidance under GAAP. Under this guidance, we recognize on our balance sheet lease liabilities representing the present value of future lease payments and an associated right-of-use asset representing our right to use or control the use of specified assets for the lease term for any operating lease with a term greater than one year.

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FINANCIAL STATEMENTS

The impact of our adoption of ASC 842 did not have a material impact on our income statement or cash flow statement. The impact on our balance sheets is as follows:
  December 31, 2019
(in millions) As reported Balance Using Previous Standard Increase (Decrease)
Balance sheet      
Assets      
Operating lease right-of-use assets $55
 $
 $55
Liabilities      
Operating lease liabilities 17
 
 17
Operating lease liabilities, noncurrent 48
 10
 38
Equity      
Accumulated deficit (219) (219) 

Recently issued accounting pronouncements
Credit Losses - In June 2016, the FASB issuedWe adopted ASU 2016-13 - Financial Instruments - Credit Losses (ASC Topic 326) effective January 1, 2020 using a modified retrospective approach, under which requires financial assetswe recognized the cumulative effects of initially applying this guidance as an adjustment to be presented at the net amount expected to be collected.opening balance of retained earnings on January 1, 2020 with unchanged comparative periods. We will beare required to use forward-looking information when evaluating an allowance for our accounts receivable, unbilled revenue and other financial assets measured at amortized cost. ASC Topic 326 also modifiesmodified the impairment guidance for available-for-sale debt securities to require an allowance for credit losses. We will adopt ASC Topic 326 effective January 1, 2020 using a modified retrospective approach through a cumulative-effect adjustment to retained earnings. We do not expect theThe adoption of ASC Topic 326 todid not have a material impacteffect on our financial statements.
Recognizing and Measuring Contract Assets and Contract Liabilities From Contracts With Customers Acquired in a Business Combination – We will early adopt ASU 2021-08 – Business Combinations (Topic 805) effective January 1, 2022. ASU 2021-08 amends ASC 805 to add contract assets and contract liabilities to the list of exceptions to the recognition and measurement principles that apply to business combinations and requires that we recognize and measure contract assets and contract liabilities acquired in a business combination in accordance with ASC Topic 606. The adoption of ASU 2021-08 will not have a material effect on our financial statements.
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FINANCIAL STATEMENTS
NOTE 2. CASH, CASH EQUIVALENTS AND INVESTMENTS - UNRESTRICTED AND RESTRICTED
Under the terms of the agreements with certain of our workers' compensation and health benefit insurance carriers, we are required to maintain collateral in trust accounts for the benefit of specified insurance carriers and to reimburse the carriers’ claim payments within our deductible layer. We invest a portion of the collateral amounts in marketable securities. We report the current and noncurrent portions of these trust accounts as restricted cash, cash equivalents and investments on the consolidated balance sheets.
We require our clients to prefund their payroll and related taxes and other withholding liabilities before payroll is processed or due for payment. This prefund is included in restricted cash, cash equivalents and investments as payroll funds collected, which is designated to pay pending payrolls, payroll tax liabilities and other payroll withholdings.
We also invest available corporate funds, primarily in fixed income securities which meet the requirements of our corporate investment policy and are classified as available for sale (AFS).

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FINANCIAL STATEMENTS

Our total cash, cash equivalents and investments are summarized below:
 December 31, 2019December 31, 2018
(in millions)Cash and cash equivalentsAvailable-for-sale marketable securities
Certificate
of
deposits
TotalCash and cash equivalentsAvailable-for-sale marketable securities
Certificate
of
deposits
Total
Cash and cash equivalents$213
$
$
$213
$228
$
$
$228
Investments
68

68

54

54
Restricted cash, cash equivalents and investments        
Payroll funds collected1,018


1,018
783


783
Collateral for health benefits claims98


98
75


75
Collateral for workers' compensation claims62


62
66
1

67
Collateral to secure standby letter of credit





2
2
Other security deposits2


2
15


15
Total restricted cash, cash equivalents and investments1,180


1,180
939
1
2
942
Investments, noncurrent
125

125

135

135
Restricted cash, cash equivalents and investments, noncurrent        
Collateral for workers' compensation claims63
148
1
212
182
5

187
Total$1,456
$341
$1
$1,798
$1,349
$195
$2
$1,546

December 31, 2021December 31, 2020
(in millions)Cash and cash equivalentsAvailable-for-sale marketable securitiesTotalCash and cash equivalentsAvailable-for-sale marketable securitiesTotal
Cash and cash equivalents$612 $ $612 $301 $— $301 
Investments 135 135 — 57 57 
Restricted cash, cash equivalents and investments
Payroll funds collected1,012  1,012 1,228 — 1,228 
Collateral for health benefits claims25 98 123 16 82 98 
Collateral for workers' compensation claims58  58 60 — 60 
Other security deposits2  2 — 
Total restricted cash, cash equivalents and investments1,097 98 1,195 1,306 82 1,388 
Investments, noncurrent 168 168 — 138 138 
Restricted cash, cash equivalents and investments, noncurrent
Collateral for workers' compensation claims29 137 166 36 174 210 
Total$1,738 $538 $2,276 $1,643 $451 $2,094 
NOTE 3. INVESTMENTS

The amortized cost, gross unrealized gains, gross unrealized losses, and fair valuesvalue of our AFS investments as of December 31, 20192021 and 20182020 are presented below:
December 31, 2019December 31, 2018December 31, 2021December 31, 2020
(in millions)Amortized CostGross Unrealized GainsGross Unrealized LossesFair ValueAmortized CostGross Unrealized GainsGross Unrealized LossesFair Value(in millions)Amortized CostGross Unrealized GainsGross Unrealized LossesFair ValueAmortized CostGross Unrealized GainsGross Unrealized LossesFair Value
Asset-backed securities$30
$
$
$30
$33
$
$
$33
Asset-backed securities$49 $ $ $49 $24 $— $— $24 
Corporate bonds123
1

124
99


99
Corporate bonds167 1 (1)167 126 — 128 
U.S. government agencies and government-sponsored agencies14


14
7


7
U.S. government agencies and government-sponsored agencies17   17 27 — 28 
U.S. treasuries163


163
46


46
U.S. treasuries285 1 (1)285 261 — 265 
Exchange traded fund



1


1
Certificates of deposit1


1




Certificate of depositCertificate of deposit11   11 — — — — 
Other debt securities10


10
9


9
Other debt securities9   9 — — 
Total$341
$1
$
$342
$195
$
$
$195
Total$538 $2 $(2)$538 $444 $$— $451 
Gross unrealized losses were immaterial as of December 31, 20192021 and 2018 were not material.2020.
Unrealized losses on fixed income securities are principally caused by changes in interest rates and the financial condition of the issuer. In analyzing an issuer's financial condition, we consider whether the securities are issued by the federal government or its agencies, whether downgrades by credit rating agencies have occurred, and industry analysts' reports. As we have the ability to hold these investments until maturity, or for the foreseeable future, no decline was
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FINANCIAL STATEMENTS
impairment charges were deemed to be other-than-temporary.necessary. Actual maturities may differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.

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FINANCIAL STATEMENTS

The fair value of debt investments by contractual maturity are shown below:
(in millions) December 31, 2019 December 31, 2018 
One year or less $80
 $59
 
Over one year through five years 237
 120
 
Over five years through ten years 8
 3
 
Over ten years 17
 12
 
Total fair value $342

$194

(in millions)December 31, 2021
One year or less$193
Over one year through five years310
Over five years through ten years10
Over ten years25
Total fair value$538
The gross proceeds from sales and maturities of AFS securities for the years ended December 31, 2021, 2020, and 2019 2018, and 2017 are shownpresented below. We had immaterial gross realized gains and losses from sales of investments for the years ended December 31, 2019, 2018,2021, 2020, and 2017.2019.
 Year Ended December 31,
(in millions)201920182017
Gross proceeds from sales$76
$54
$
Gross proceeds from maturities83
47
14
Total$159
$101
$14

Year Ended December 31,
(in millions)202120202019
Gross proceeds from sales$162 $93 $76 
Gross proceeds from maturities187 131 83 
Total$349 $224 $159 
NOTE 4. FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS
Fair Value of Financial Instruments
We use an independent pricing source to determine the fair value of our securities. The independent pricing source utilizes various pricing models for each asset class; including the market approach. The inputs and assumptions for the pricing models are market observable inputs including trades of comparable securities, dealer quotes, credit spreads, yield curves and other market-related data.
We have not adjusted the prices obtained from the independent pricing service and we believe the prices received from the independent pricing service are representative of the prices that would be received to sell the assets at the measurement date (exit price).
The carrying value of the Company's cash equivalents and restricted cash equivalents approximate their fair values due to their short-term maturities.
We did not have any Level 3 financial instruments recognized in our consolidated balance sheetsheets as of December 31, 20192021 and 2018.2020. There were no transfers between levels as of December 31, 20192021 and 2018.

2020.
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FINANCIAL STATEMENTS

Fair Value Measurements on a Recurring Basis
The following tables summarize our financial instruments by significant categories and fair value measurement on a recurring basis as of December 31, 20192021 and 2018:2020:
(in millions)Level 1Level 2Total
December 31, 2019   
Cash equivalents:   
  Money market mutual funds$89
$
$89
  U.S. treasuries
3
3
Total cash equivalents89
3
92
Investments:  

Asset-backed securities
30
30
Corporate bonds
96
96
U.S. government agencies and government-sponsored agencies
5
5
U.S. treasuries
53
53
Other debt securities
10
10
Total investments
194
194
Restricted cash equivalents:  

Money market mutual funds42

42
U.S. treasuries
12
12
Certificate of deposit
2
2
Commercial paper14

14
Total restricted cash equivalents56
14
70
Restricted investments:  

Corporate bonds
28
28
U.S. government agencies and government-sponsored agencies
9
9
U.S. treasuries
110
110
Certificate of deposit
1
1
Total restricted investments
148
148
Total investments and restricted cash equivalents and investments$145
$359
$504


(in millions)Level 1Level 2Total
December 31, 2021
Cash equivalents:
  Money market mutual funds$4 $ $4 
  U.S. treasuries 21 21 
Total cash equivalents4 21 25 
Investments:
Asset-backed securities 49 49 
Corporate bonds 137 137 
U.S. government agencies and government-sponsored agencies 2 2 
U.S. treasuries 106 106 
Other debt securities 9 9 
Total investments 303 303 
Restricted cash equivalents:
Money market mutual funds93  93 
Certificate of deposit 1 1 
Total restricted cash equivalents93 1 94 
Restricted investments:
Corporate bonds 30 30 
U.S. government agencies and government-sponsored agencies 15 15 
U.S. treasuries 179 179 
Certificate of deposit 11 11 
Total restricted investments 235 235 
Total investments and restricted cash equivalents and investments$97 $560 $657 
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FINANCIAL STATEMENTS

(in millions)Level 1Level 2Total
December 31, 2018   
Cash equivalents:   
  Money market mutual funds$4
$
$4
  U.S. treasuries
1
1
Total cash equivalents4
1
5
Investments:   
Asset-backed securities
33
33
Corporate bonds
99
99
U.S. government agencies and government-sponsored agencies
7
7
U.S. treasuries
41
41
Other debt securities
9
9
Total investments
189
189
Restricted cash equivalents:   
Money market mutual funds48

48
Commercial paper20

20
Total restricted cash equivalents68

68
Restricted investments:  
U.S. treasuries
5
5
Exchange traded fund1

1
Certificate of deposit
2
2
Total restricted investments1
7
8
Total investments and restricted cash equivalents and investments$73
$197
$270

(in millions)Level 1Level 2Total
December 31, 2020
Cash equivalents:
  Money market mutual funds$$— $
  U.S. treasuries— 11 11 
Total cash equivalents11 13 
Investments:
Asset-backed securities— 24 24 
Corporate bonds— 93 93 
U.S. government agencies and government-sponsored agencies— 
U.S. treasuries— 67 67 
Other debt securities— 
Total investments— 195 195 
Restricted cash equivalents:
Money market mutual funds99 — 99 
Total restricted cash equivalents99 — 99 
Restricted investments:
Corporate bonds— 35 35 
U.S. government agencies and government-sponsored agencies— 23 23 
U.S. treasuries— 198 198 
Total restricted investments— 256 256 
Total investments and restricted cash equivalents and investments$101 $462 $563 
Fair Value of Financial Instruments Disclosure

Long-Term Debt
Our long-term debtThe fair value of our 2029 Notes was obtained from a third-party pricing service and is a floating rate debt andbased on observable market inputs. As such, the fair value of the senior notes is considered Level 2 in the hierarchy for fair value measurement. As of December 31, 2021, our 2029 Notes were carried at their cost, net of issuance costs, and had a fair value of $500 million.
Our 2018 Term Loan was floating rate debt approximatesprior to being repaid and terminated in 2021. The fair value of our 2018 Term Loan approximated its carrying value (exclusive of issuance costs) at December 31, 2019 and 2018.2020. The fair value of our floating rate debt is2018 Term Loan was estimated based on a discounted cash flow, which incorporates credit spreads and market interest rates to estimate the fair value and is considered Level 3 in the hierarchy for fair value measurement.
Derivative Instruments
In June 2019, we entered into an interest rate collar derivative transaction with no upfront premium to mitigate the risk of changes in interest rates on the interest payments on a portion of our floating rate debt. If short-term interest rates increase, we will incur higher interest expense on any future outstanding balances of floating rate debt. We use this derivative as part of our interest rate risk management strategy and designated it as a cash flow hedge. If interest rates rise above the cap strike rate on the contract, we will receive variable-rate amounts and if interest rates fall below the floor strike rate on the contract, we will pay variable-rate amounts.
The following table summarizes the fair value of our derivative instrument at December 31, 2019:
 December 31, 2019
    Fair Market Value
(in millions)Hedge typeFinal settlement dateNotional amountOther current assetsAccounts payable and other current liabilities
Derivatives designated as hedging instruments     
Collar - LIBORCash flowMay 2022$213
$
$


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FINANCIAL STATEMENTS

The pre-tax effect of derivative instrument for year ended December 31, 2019 is insignificant and we estimate that an insignificant amount of net derivative gains or losses included in other comprehensive income will be reclassified into earnings within the following 12 months. There were no cash flows associated with the derivative for year ended December 31, 2019.
As of December 31, 2019, we do not hold, nor have we posted, any collateral related to the above derivative instrument.
The interest rate collar derivative is classified as Level 2 in the fair value hierarchy as its value is determined using observable inputs such as forward LIBOR curves.
NOTE 5. PROPERTY, EQUIPMENT AND SOFTWARE, NET
Property, equipment and software, net, consists of the following:
(in millions)December 31, 2021December 31, 2020
Software$236 $204 
Office equipment, including data processing equipment31 28 
Leasehold improvements25 24 
Furniture, fixtures, and equipment17 16 
Projects in progress1 
Total310 273 
Less: Accumulated depreciation(231)(194)
Property and equipment, net$79 $79 
(in millions)December 31, 2019December 31, 2018
Software$174
$144
Office equipment, including data processing equipment27
27
Leasehold improvements24
21
Furniture, fixtures, and equipment17
15
Projects in progress3
2
Total245
209
Less: Accumulated depreciation(160)(130)
Property and equipment, net$85
$79
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Projects in progress consist primarily of development costs for internally developed software, which we capitalize and amortize on a straight-line basis over the estimated useful life.
The following table summarizes our depreciation expense and capitalized internally developed software costs and related depreciation expense.
 Year Ended December 31,
(in millions)201920182017
Depreciation expense$41
$35
$28
Capitalized internally developed software costs31
33
29
Depreciation expense for capitalized internally developed software costs29
24
17

 Year Ended December 31,
(in millions)202120202019
Depreciation expense$42 $42 $41 
Capitalized internally developed software costs33 36 31 
Depreciation expense for capitalized internally developed software costs33 31 29 
NOTE 6. GOODWILL AND OTHER INTANGIBLE ASSETS
The following summarizesChanges in goodwill for the years ended December 31, 2021 and other intangible assets:2020 are as follows:
(in millions)Amount
Balance at December 31, 2019$289 
Additions
Balance at December 31, 2020$294 
Additions
Balance at December 31, 2021$294
  December 31, 2019December 31, 2018
(in millions)Weighted Average Amortization PeriodGross Carrying AmountAccumulated Amortization
Net
Carrying Amount
Gross Carrying AmountAccumulated AmortizationNet Carrying Amount
Goodwill $289
$
$289
$289
$
$289
Amortizable intangibles:       
Customer contracts10 years90
(76)14
90
(71)19
Developed technology5 years5
(4)1
5
(3)2
Total $95
$(80)$15
$95
$(74)$21
Other intangibles consists of customer contact lists with a weighted average amortization period of 10 years:

(in millions)December 31, 2021December 31, 2020
Gross carrying amount$98 $98 
Accumulated amortization(92)(80)
Net carrying amount$6 $18 
Amortization of intangible assets during the years ended December 31, 2019, 20182021, 2020 and 20172019 was $5 million for each period. We evaluate the remaining useful life of intangible assets annuallyquarterly to determine whether events and circumstances warrant a revision to the estimated remaining useful life. 

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FINANCIAL STATEMENTS

During the year ended December 31, 2021, we recognized a $7 million impairment of a customer relationship intangible due to higher than expected attrition.
Expense related to intangibles amortization in future periods as of December 31, 20192021 is expected to be as follows:
Year ending December 31:Amount
(in millions)
2022$4 
20232 
2024 and thereafter 
Total$6 
Year ending December 31:Amount
(in millions)
2020$5
20214
20224
20232
Total$15
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FINANCIAL STATEMENTS
NOTE 7. ACCRUED WORKERS' COMPENSATION COSTS
The following table summarizes the accrued workers’ compensation cost activity for the years ended December 31, 2019, 20182021, 2020 and 2017:2019:
Year Ended December 31,Year Ended December 31,
(in millions)201920182017(in millions)202120202019
Total accrued costs, beginning of year$238
$255
$255
Total accrued costs, beginning of year$205 $214 $238 
Incurred Incurred
Current year72
80
98
Current year66 64 72 
Prior years(31)(28)(6)Prior years(23)(20)(31)
Total incurred41
52
92
Total incurred43 44 41 
Paid Paid
Current year(14)(12)(14)Current year(10)(8)(14)
Prior years(51)(57)(78)Prior years(40)(45)(51)
Total paid(65)(69)(92)Total paid(50)(53)(65)
Total accrued costs, end of year$214
$238
$255
Total accrued costs, end of year$198 $205 $214 
The following table summarizestables summarize workers' compensation liabilities on the consolidated balance sheets:
(in millions) December 31, 2019December 31, 2018(in millions)December 31, 2021December 31, 2020
Total accrued costs, end of year
$214
$238
Total accrued costs, end of year$198 $205 
Collateral paid to carriers and offset against accrued costs (9)(13)Collateral paid to carriers and offset against accrued costs(8)(8)
Total accrued costs, net of carrier collateral offset
$205
$225
Total accrued costs, net of carrier collateral offset$190 $197 
  
Payable in less than 1 year
(net of collateral paid to carriers of $3 as of December 31, 2019 and 2018)
 $61
$67
Payable in more than 1 year
(net of collateral paid to carriers of $6 and $10 as of December 31, 2019 and 2018, respectively)
 144
158
Payable in less than 1 year
(net of collateral paid to carriers of $2 and $3 as of December 31, 2021 and 2020, respectively)
Payable in less than 1 year
(net of collateral paid to carriers of $2 and $3 as of December 31, 2021 and 2020, respectively)
$55 59
Payable in more than 1 year
(net of collateral paid to carriers of $6 and $5 as of December 31, 2021 and 2020, respectively)
Payable in more than 1 year
(net of collateral paid to carriers of $6 and $5 as of December 31, 2021 and 2020, respectively)
135 138 
Total accrued costs, net of carrier collateral offset
$205
$225
Total accrued costs, net of carrier collateral offset$190 $197 
Incurred claims related to prior years represent changes in estimates for ultimate losses on workers' compensation claims. For the years ended December 31, 20192021, 2020 and December 31, 2018,2019, the favorable development was primarilyis due to lower than expected severity development on claims that had previously been reported, as well as a lower than expected reported claim frequency. Forfrequency and severity for the year ended December 31, 2017, the favorable development was primarily due to lower than expected severity of reported claims associated with office worker WSEs inmore recent accident years.
As of December 31, 20192021 and 2018,2020, we had $46$43 million and $57$45 million, respectively, of collateral held by insurance carriers of which $9$8 million and $13 million, respectively,for both periods was offset against accrued workers' compensation costs as the agreements permit and are net settled of insurance obligations against collateral held.

74

FINANCIAL STATEMENTS

NOTE 8. LEASES
Our leasing activities predominantly consist of leasing office space that we occupy, which we have classified as operating leases. Our leases are comprised of fixed payments with remaining lease terms of 1 to 97 years, some1 of which include optionsincludes an option to extend for up to 155 years. As of December 31, 2019,2021, we have not included any options to extend or cancel in the calculation of our lease liability or ROU asset. We do not have any significant residual value guarantees or restrictive covenants in our leases.
During the year ended December 31, 2019, weWe recognized operating lease expense of $13 million, $17 million and $19 million.
Duringmillion for the yearyears ended December 31, 2021, 2020 and 2019, we paid $17 million to reduce operating lease liabilities and recognized $17 million in new operating lease liabilities in exchange for ROU assets.respectively.
As of December 31, 2019,2021 and 2020, the weighted average remaining lease term on our operating leases was 6.1 years.5.2 years and 5.8 years, respectively. Future minimum lease payments as of December 31, 2019 and December 31, 20182021 were as follows:
TRINET782021 FORM 10-K

(in millions)
December 31, 2019 (1)
December 31, 2018 (2)
2019$
$18
202019
17
202111
11
202210
9
20239
8
20246
5
2025 and thereafter19
20
Total future minimum lease payments$74
$88
Less: imputed interest(9)
N/A(3)

Total operating lease liabilities$65
N/A(3)

Current portion17
N/A(3)

Non-current portion48
N/A(3)

FINANCIAL STATEMENTS
(1) Presented in accordance with ASC 842.
(in millions)December 31, 2021
2022$13 
202312 
20249 
20258 
20267 
2026 and thereafter9 
Total future minimum lease payments$58 
Less: imputed interest(6)
Total operating lease liabilities$52 
Current portion11 
Non-current portion41 
(2) Presented in accordance with ASC 840.
(3) N/A - Not Applicable under ASC 840.
NOTE 9. LONG-TERM DEBT AND REVOLVING CREDIT AGREEMENT BORROWINGS
As of December 31, 20192021 and 2018,2020, long-term debt consisted of the following:
(in millions)December 31,
2019
December 31,
2018
2018 Term Loan A392
414
Total term loans392
414
Deferred loan costs(1)(1)
Less: current portion(22)(22)
Long-term debt, noncurrent$369
$391
   
Annual contractual interest rate3.42%4.15%
Effective interest rate3.52%4.25%


(in millions)December 31, 2021December 31, 2020
2018 Term Loan A$ $370 
2029 Notes500  
Principal amount500 370 
Deferred issuance costs(5)— 
Less: current portion (22)
Long-term debt, noncurrent$495 $348 
Annual contractual interest rate3.50 %1.77 %
Effective interest rate3.67 %1.87 %
In JuneFebruary 2021, we issued $500 million aggregate principal of 3.50% senior unsecured notes maturing in March 2029 (our 2029 Notes). The 2029 Notes are a senior unsecured obligation of TriNet Group, Inc. and rank equally with all of its existing and future senior unsecured indebtedness. Interest payments on the 2029 Notes are due semi-annually in arrears on March 1 and September 1, beginning on September 1, 2021. The net proceeds were used to repay and terminate our 2018 Term Loan and for general corporate purposes.
We may voluntarily redeem the 2029 Notes, in whole or in part, (1) at any time prior to March 1, 2024 at (a) 100% of their principal amount, plus a “make whole” premium or (b) with the net cash proceeds received from an equity offering at a redemption price equal to 103.50% of the principal amount, provided the aggregate principal amount of all such redemptions does not exceed 40% of the original aggregate principal amount of the 2029 Notes; (2) at any time on or after March 1, 2024 at a prepayment price equal to 101.75% of the principal amount; (3) at any time on or after March 1, 2025 at a prepayment price equal to 100.875%of the principal amount; and (4) at any time on or after March 1, 2026 at a prepayment price equal to 100% of the principal amount; in each case, plus accrued and unpaid interest, if any, to but excluding, the date of redemption.
In February 2021, concurrently with the closing of the 2029 Notes offering, we entered into a $425new $500 million term loan Arevolving facility (our 2018 Term Loan)2021 Revolver) under oura new credit agreement (2018(our 2021 Credit Agreement). The proceeds of the 2018 Term Loan were used to repay and our previously outstanding term loans.

75


FINANCIAL STATEMENTS

The 2018 Credit Agreement includes a $250 million revolving credit facility (our 2018 Revolver), which will be used solely for working capital and other general corporate purposes. The 2018 Revolver includes capacity for a $20 million swingline facility.was terminated. Letters of credit issued pursuant to the revolving credit facility reduce the amount available for borrowing under the 20182021 Revolver. AtAs of December 31, 2019,2021, we had $16 million of letters of credit outstanding and remaining capacity of $234$491 million under the 2018our 2021 Revolver.
InterestThe annual interest rate for borrowings under our 2021 Revolver is calculated based on an applicable London Interbank Offered Rate (LIBOR) tenor of our choosing, plus a margin of 1.25% to 2.00%, or, at our option, the alternative base rate (ABR), plus a margin of 0.25% to 1.00%. The applicable LIBOR or ABR margin is based on our 2018 Term LoanTotal Leverage Ratio, as defined in the 2021 Credit Agreement. The ABR is payable quarterly and is variable based on LIBORthe highest of (a) the applicable Federal
TRINET792021 FORM 10-K

FINANCIAL STATEMENTS
Reserve Bank of New York rate, as defined in our 2021 Credit Agreement plus 1.625% or0.50% (b) the prime rate, and (c) one month LIBOR adjusted daily plus 0.625%,1.00%.
In the event TriNet Group, Inc. receives a Corporate Issuer Credit Rating that is one level below investment grade rating or higher from at our option, subject to certain rate adjustmentsleast two Nationally Recognized Statistical Rating Organizations, then rating based upon our total leverage ratio. At December 31, 2019, the interest rate was based on LIBOR plus 1.625%. We are required to pay a quarterly commitment fee on the daily unused amountpricing applies and, for so long as rating-based pricing applies, irrespective of the commitments underTotal Leverage Ratio, the LIBOR margin will be 1.125% and the ABR margin will be 0.125%.
The indenture governing our 2018 Revolver, as well as fronting fees2029 Notes includes restrictive covenants limiting our ability to: (i) create liens on certain assets to secure debt; (ii) grant a subsidiary guarantee of certain debt without also providing a guarantee of the 2029 Notes; and other customary fees for letters(iii) consolidate or merge with or into, or sell or otherwise dispose of credit issued under our 2018 Revolver, which is subject to adjustments based on our total leverage ratio.
Borrowings under our 2018 Term Loan and 2018 Revolver are secured byall or substantially all of our assets other than excluded assets as definedto, another person, subject, in our 2018each case, to certain customary exceptions.
The 2021 Credit Agreement which includes negative covenants that limit our ability to incur indebtedness and liens, sell assets and make restricted payments, including dividends and investments, subject to certain customary assets, assets held in trusts as collateral and WSE related assets.

We are permitted to make voluntary prepayments at any time without payment of a premium. We are required to make mandatory prepayments of term loans (without payment of a premium) with (i) net cash proceeds from issuances of debt (other than certain permitted debt), and (ii) net cash proceeds from certain non-ordinary course asset sales and casualty and condemnation proceeds (subject to reinvestment rights and other exceptions).
The 2018exceptions. In addition, the 2021 Credit Agreement also contains certain financialother customary affirmative and negative covenants and restrictive covenants customary for facilitiesevents of this type, including restrictions on indebtedness, liens, investments, mergers, dispositions, prepayment of indebtedness (other than our 2018 Term Loan and our 2018 Revolver), dividends, distributions and transactions with affiliates, as well as minimum interest coverage anddefault. The 2021 Credit Agreement also contains a financial covenant that requires the Company to maintain certain maximum total net leverage ratio requirements.ratios. We were in compliance with all financial covenants under the credit facilities2021 Credit Agreement at December 31, 2019.2021.
The remaining balance of our 2018 Term Loan will be repaid in quarterly installments in aggregate annual amounts as follows:
 Year ending December 31, 
(in millions)20202021202220232024Thereafter
Term loan repayments$22
$22
$22
$326
$
$

NOTE 10. COMMITMENTS AND CONTINGENCIES
Contingencies
On September 29, 2020, a class action was filed in the United States District Court for the Middle District of Florida against the directors of certain TriNet subsidiaries and other TriNet employees on behalf of participants in 2 retirement plans available to TriNet’s eligible worksite employees, the TriNet 401(k) Plan and the TriNet Select 401(k) Plan. The complaint is similar to claims recently brought against a number of employers including PEOs and generally alleges that the defendants violated certain fiduciary obligations to Plan participants under the Employee Retirement Income Security Act of 1974 with respect to overseeing plan investment and recordkeeping fees. At this time, we are unable to reasonably estimate any possible loss, or range of loss, with respect to this matter. We believe the claims are without merit.
We are and, from time to time, have been and may in the future become involved in various litigation matters, legal proceedings, and claims arising in the ordinary course of our business, including disputes with our clients or various class action, collective action, representative action, and other proceedings arising from the nature of our co-employment relationship with our clients and WSEs in which we are named as a defendant. In addition, due to the nature of our co-employment relationship with our clients and WSEs, we could be subject to liability for federal and state law violations, even if we do not participate in such violations. While our agreements with our clients contain indemnification provisions related to the conduct of our clients, we may not be able to avail ourselves of such provisions in every instance. We have accrued our current best estimates of probable losses with respect to these matters, which are individually and in aggregate immaterial to our consolidated financial statements.
While the outcome of the matters described above cannot be predicted with certainty, management currently does not believe that any such claims or proceedings will have a materially adverse effect on our consolidated financial position, results of operations, or cash flows. However, the unfavorable resolution of any particular matter or our reassessment of our exposure for any of the above matters based on additional information obtained in the future could have a material impact on our consolidated financial position, results of operations, or cash flows.

76


FINANCIAL STATEMENTS

NOTE 11. STOCK BASED COMPENSATION
Equity Based Incentive Plans
Our 2019 Equity Incentive Plan (the 2019 Plan), approved in May 2019, provides for the grant of stock awards, including stock options, RSUs, RSAs, and other stock awards. SharesThere were approximately 2 million shares available for grant under the 2019 Plan as of December 31, 2019 was approximately 3 million.2021.
The 2009 Equity Incentive Plan (the 2009 Plan), was terminated, replaced and superseded by the 2019 Plan, except that any outstanding awards granted under the 2009 Plan remain in effect pursuant to their terms.
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FINANCIAL STATEMENTS
Stock Options
Stock options are granted to employees at exercise prices equal to the fair market value of our common stock on the dates of grant. Stock options generally have a maximum contractual term of 10 years. Stock options generally vest over 4 years, and are generally forfeited if the employee terminates service prior to vesting.
The following table summarizes stock option activity under our equity-based plan for the year ended December 31, 2019:2021:
Number
of Shares
Weighted
Average
Exercise
Price
Weighted
Average
Remaining
Contractual
Term
(in years)
Aggregate
Intrinsic
Value
(in millions)
Balance at December 31, 2020379,985 $15.10 3.2$25 
Exercised(73,118)10.20 
Balance at December 31, 2021 (1)
306,867 $16.20 2.2$24 
 Number
of Shares
Weighted
Average
Exercise
Price
Weighted
Average
Remaining
Contractual
Term
(in years)
Aggregate
Intrinsic
Value
(in millions)
Balance at December 31, 2018655,515
$12.90
4.91$19
Exercised(187,504)10.80



Expired(6,000)0.50
  
Balance at December 31, 2019462,011
$13.90
4.02$20
Exercisable at December 31, 2019462,011
$13.90
4.02$20
Vested and expected to vest at December 31, 2019462,011
$13.90
4.02$20
(1)    All options are vested and exercisable.

 Year Ended December 31,
Additional Disclosures for Stock Options (in millions)201920182017
Total fair value of options vested$1
$4
$7
Total intrinsic value of options exercised9
24
36
Cash received from options exercised2
7
11

Year Ended December 31,
Additional Disclosures for Stock Options (in millions)202120202019
Total fair value of options vested$ $— $
Total intrinsic value of options exercised6 
Cash received from options exercised1 
Restricted Stock Units (RSUs) and Restricted Stock Awards (RSAs)
Time-based RSUs and RSAs generally vest over a four-year term. Performance-based RSUs and RSAs are subject to vesting requirements and are earned, in part, based on certain financial performance metrics as defined in the grant notice. Actual number of shares earned may range from 0% to 200% of the target award. AwardsPerformance-based awards granted in 20192021 and 20182020 are earned based on a single-year performance period subject to subsequent multi-year time-based vesting with 50% of the shares earned vesting in one year after the performance period and the remaining shares in the year after. The performance-based awards granted in 2019 were previously cancelled. RSUs and RSAs are generally forfeited if the participant terminates service prior to vesting.

77


FINANCIAL STATEMENTS

The following tables summarize RSU and RSA activity under our equity-based plans for the year ended December 31, 2019:2021:
Time-based RSUs and RSAs
Total Number
of RSUs
Total Number
of RSAs
Total Number
of Shares
Weighted-Average
Grant Date
Fair Value
Nonvested at December 31, 20201,230,071 30,026 1,260,097 $54.04 
Granted562,881 — 562,881 83.71 
Vested(603,674)(24,282)(627,956)54.91 
Forfeited(180,351)— (180,351)60.96 
Nonvested at December 31, 20211,008,927 5,744 1,014,671 $68.74 
Year Ended December 31,
Additional Disclosures for equity-based plans202120202019
Total grant date fair value of shares granted (in millions)$47 $50 $38 
Total grant date fair value of shares vested (in millions)$34 $31 $30 
Shares withheld to settle payroll tax liabilities related to vesting of shares held by employees207,603 230,569 315,762 
TRINET812021 FORM 10-K

 Time-based RSUs and RSAs
 
Total Number
of RSUs
Total Number
of RSAs
Total Number
of Shares
Weighted-Average
Grant Date
Fair Value
Nonvested at December 31, 20181,560,685
98,445
1,659,130
$33.88
Granted616,224

616,224
60.99
Vested(891,633)(37,309)(928,942)32.53
Forfeited(180,547)
(180,547)38.89
Nonvested at December 31, 20191,104,729
61,136
1,165,865
$48.47
FINANCIAL STATEMENTS
 Performance-based RSUs and RSAs
 
Total Number
of RSUs
Total Number
of RSAs
Total Number Shares
Weighted-Average
Grant Date
Fair Value
Nonvested at December 31, 2018176,869
248,347
425,216
$42.02
Granted83,110

83,110
59.83
Vested(155,589)(122,387)(277,976)39.45
Cancelled(61,400)
(61,400)61.75
Forfeited(27,238)(11,103)(38,341)41.52
Nonvested at December 31, 201915,752
114,857
130,609
$49.70

Performance-based RSUs and RSAs
Total Number
of RSUs
Total Number
of RSAs
Total Number Shares
Weighted-Average
Grant Date
Fair Value
Nonvested at December 31, 2020167,127 16,052 183,179 $52.89 
Granted246,349 — 246,349 67.70 
Vested(145,207)(16,052)(161,259)52.24 
Forfeited(13,045)— (13,045)61.33 
Nonvested at December 31, 2021255,224 — 255,224 $67.16 
Time-based RSUs and RSAs
Year Ended December 31,Year Ended December 31,
Additional Disclosures for equity-based plans201920182017Additional Disclosures for equity-based plans202120202019
Total grant date fair value of shares granted (in millions)$38
$38
$37
Total grant date fair value of shares granted (in millions) (1)
Total grant date fair value of shares granted (in millions) (1)
$16 $10 $
Total grant date fair value of shares vested (in millions)$30
$28
$21
Total grant date fair value of shares vested (in millions)$8 $$11 
Shares withheld to settle payroll tax liabilities related to vesting of shares held by employees315,762
348,010
332,857
Shares withheld to settle payroll tax liabilities related to vesting of shares held by employees77,787 48,787 135,877 
 Performance-based RSUs and RSAs
 Year Ended December 31,
Additional Disclosures for equity-based plans201920182017
Total grant date fair value of shares granted (in millions)$4
$14
$10
Total grant date fair value of shares vested (in millions)$11
$7
$
Shares withheld to settle payroll tax liabilities related to vesting of shares held by employees135,877
110,222
2,244


(1)    Amount includes fair value of finalized additional grant related to the most recently ended performance period.
Employee Stock Purchase Plan

Our 2014 Employee Stock Purchase planPlan (ESPP) offers eligible employees an option to purchase shares of our common stock through payroll deductions. The purchase price is equal to the lesser of 85% of the fair market value of our common stock on the offering date or 85% of the fair market value of our common stock on the applicable purchase date. Offering periods are approximately six months in duration and will end on or about May 15 and November 15 of each year. The plan is considered to be a compensatory plan. As of December 31, 2019,2021, approximately 34 million shares were reserved for future issuances under the ESPP.

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FINANCIAL STATEMENTS

In applying the Black Scholes option valuation model for the ESPP options, we use the following assumptions:
Year Ended December 31,
(in millions)202120202019
Expected Term (in Years)0.50.50.5
Expected Volatility21-35%40-83%27-42%
Risk-Free Interest Rate0.4-0.7%0.2-1.6%1.6-2.5%
Expected Dividend Yield0 %%%
Shares Issued under ESPP136,861 236,887 207,324 
TRINET822021 FORM 10-K

 Year Ended December 31,
(in millions)201920182017
Expected Term (in Years)0.5
0.5
0.5
Expected Volatility27-42%
27-37%
28-37%
Risk-Free Interest Rate1.6-2.5%
1.42-2.5%
0.62-1.42%
Expected Dividend Yield0%0%0%
    
Shares Issued under ESPP207,324
175,966
224,928

FINANCIAL STATEMENTS
Stock Based Compensation
Stock based compensation expense is measured based on the fair value of the stock award on the grant date and recognized over the requisite service period for each separately vesting portion of the stock award. Stock based compensation expense and other disclosures for stock based awards made to our employees pursuant to the equity plans waswere as follows: 
Year Ended December 31, Year Ended December 31,
(in millions)201920182017(in millions)202120202019
Cost of providing services$8
$10
$8
Cost of providing services$12 $$
Sales and marketing3
8
6
Sales and marketing6 
General and administrative28
22
14
General and administrative29 26 28 
Systems development and programming costs2
4
4
Systems development and programming costs3 
Total stock based compensation expense$41
$44
$32
Total stock based compensation expense$50 $43 $41 
Total stock based compensation capitalized$1
$
$
Total stock based compensation capitalized$1 $$
Income tax benefit related to stock based compensation expense$11
$11
$7
Income tax benefit related to stock based compensation expense$10 $$11 
Tax benefit realized from stock options exercised and similar awards$18
$23
$28
Tax benefit realized from stock options exercised and similar awards$16 $14 $18 
The table below summarizes unrecognized compensation expense for the year ended December 31, 20192021 associated with the following:
 Amount
(in millions)
Weighted-Average Period (in Years)
Nonvested stock options$
0
Nonvested RSUs51
2.27
Nonvested RSAs2
0.49

Amount
(in millions)
Weighted-Average Period (in Years)
Nonvested time based RSUs and RSAs$64 2.38
Nonvested performance based RSUs and RSAs15 1.44

79


FINANCIAL STATEMENTS

NOTE 12. STOCKHOLDERS' EQUITY
Common Stock
The following table shows the beginning and ending balances of our issued and outstanding common stock for the year ended December 31, 2019, 2018,2021, 2020, and 2017:2019:
 Year Ended
December 31,
 201920182017
Shares issued and outstanding, beginning balance70,596,559
69,818,392
69,015,690
Issuance of common stock from vested restricted stock units1,036,119
1,634,271
1,020,352
Issuance of common stock from exercise of stock options187,504
617,157
1,441,957
Issuance of common stock for employee stock purchase plan207,324
175,966
224,928
Repurchase of common stock(2,510,376)(1,190,995)(1,549,434)
Awards effectively repurchased for required employee withholding taxes(451,639)(458,232)(335,101)
Shares issued and outstanding, ending balance69,065,491
70,596,559
69,818,392

Year Ended
December 31,
202120202019
Shares issued and outstanding, beginning balance66,456,663 69,065,491 70,596,559 
Issuance of common stock from vested restricted stock units748,881 659,689 1,036,119 
Issuance of common stock from exercise of stock options73,118 81,026 187,504 
Issuance of common stock for employee stock purchase plan136,861 236,887 207,324 
Repurchase of common stock(1,161,909)(3,307,074)(2,510,376)
Awards effectively repurchased for required employee withholding taxes(285,390)(279,356)(451,639)
Shares issued and outstanding, ending balance65,968,224 66,456,663 69,065,491 
Stock Repurchases
OnIn February 6, 2019,2020, our board of directors authorized a $300 million incremental increase to our ongoing stock repurchase program. In February 2022, our board of directors authorized a further $300 million incremental increase to this stock repurchase program. This repurchase authorization has no expiration. We retire shares in the period they are acquired and account for the payment as a reduction to stockholders' equity.
The following table summarizes the share repurchases under this program for the years ended December 31, 2019, 20182021, 2020 and 2017:2019:
 Year Ended
December 31,
(in millions, except per share data)201920182017
Total cost$140
$61
$44
Total shares2,510,376
1,190,995
1,549,434
Average price per share$55.64
$51.22
$34.46
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FINANCIAL STATEMENTS
Year Ended
December 31,
202120202019
Total cost (in millions)$94 $178 $140 
Total shares1,161,909 3,307,074 2,510,376 
Average price per share$81.13 $53.85 $55.64 
As of December 31, 2019, $2362021, $263 million remains available for repurchase under all authorizations approved by the board of directors.

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FINANCIAL STATEMENTS

NOTE 13. INCOME TAXES
Provision for Income Taxes
We are subject to tax in U.S. federal and various state and local jurisdictions, as well as Canada. We are not subjectopen to any materialfederal and significant state income tax examinations in federal or state jurisdictions for tax years prior to January 1, 2015.year 2016 and subsequent years. The provision for income taxes consists of the following:
 Year Ended December 31,
(in millions)201920182017
Current:   
Federal$53
$41
$46
State12
7
1
 Total Current65
48
47
Deferred:   
Federal(2)(3)12
State(5)4
3
Revaluation due to legislative changes

(40)
Total Deferred(7)1
(25)
Total$58
$49
$22

Year Ended December 31,
(in millions)202120202019
Current:
Federal$86 $96 $53 
State28 30 12 
   Foreign1 — 
 Total Current115 127 65 
Deferred:
Federal(7)(33)(2)
State(3)(9)(5)
Foreign(2)— — 
Total Deferred(12)(42)(7)
Total$103 $85 $58 
Certain prior year amounts have been reclassified to conform to current period presentation. The U.S. federal statutory income tax rate reconciled to our effective tax rate is as follows:
 Year Ended December 31,
 201920182017
(in millions, except percent)Pre-Tax IncomeTax Expense/(Benefit)Percent of Pre-Tax Income (Loss)Pre-Tax IncomeTax Expense/(Benefit)Percent of Pre-Tax Income (Loss)Pre-Tax IncomeTax Expense/(Benefit)Percent of Pre-Tax Income (Loss)
 $270
  $241
  $200
  
U.S. federal statutory tax rate $57
21 % $51
21 % $70
35 %
State income taxes, net of federal benefit 20
7
 18
8
 10
5
Tax rate change 

 

 (40)(20)
Nondeductible meals, entertainment and penalties 1

 1

 1

Stock based compensation (1)
 (9)(4) (15)(7)
Uncertain tax positions 

 1

 4
2
Tax credits (7)(3) (5)(2) (4)(2)
State and tax return to provision adjustments (8)(3) (7)(3) (5)(3)
Sec 199 benefits (1)
 

 (3)(1)
Other (3)(1) (1)
 4
2
Total $58
21 % $49
20 % $22
11 %

Year Ended December 31,
202120202019
(in millions, except percent)Pre-Tax IncomeTax Expense/(Benefit)Percent of Pre-Tax Income (Loss)Pre-Tax IncomeTax Expense/(Benefit)Percent of Pre-Tax Income (Loss)Pre-Tax IncomeTax Expense/(Benefit)Percent of Pre-Tax Income (Loss)
$441 $357 $270 
U.S. federal statutory tax rate$93 21 %$75 21 %$57 21 %
State income taxes, net of federal benefit32 7 25 20 
Tax rate change(1) — — — — 
Nondeductible meals, entertainment and penalties2  — — — 
Stock based compensation(2) (2)— (1)— 
Uncertain tax positions(1) — — — 
Tax credits(7)(2)(6)(2)(7)(3)
State and tax return to provision adjustments(10)(2)(7)(2)(8)(3)
Other(3)(1)(1)— (4)(1)
Total$103 23 %$85 24 %$58 21 %
Our effective income tax rate increaseddecreased by 1% to 21%23% in 20192021 from 20%24% in 2018.2020. The increasedecrease was primarily attributable to one-time expensesbenefits associated with stock based compensation and a reductionfavorable adjustment of our previously disputed receivable from excess tax benefits related to stock-based compensation. These increases were partially offset by a one-time benefit associated with prior year tax expense and changes in valuation allowance.
The revaluation of deferred taxes from changes in the statutory tax rates resulted in a discrete tax benefit representing an immaterial amount in 2019 and 2018, and 20% for the year ended December 31, 2017.

IRS.
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FINANCIAL STATEMENTS

Deferred Income Taxes
Significant components of our deferred tax assets and liabilities are as follows:
Year Ended December 31,
(in millions)20212020
Deferred tax assets:
Net operating losses (federal and state)$3 $
Accrued expenses20 14 
Accrued workers' compensation costs9 
Recovery credit13 26 
Operating lease liabilities13 15 
Stock based compensation3 
Tax benefits relating to uncertain positions1 
Tax credits (federal and state)6 
Total68 79 
Valuation allowance(5)(5)
Total deferred tax assets63 74 
Deferred tax liabilities:
Depreciation and amortization(37)(37)
Deferred service revenues (20)
Prepaid commission expenses(24)(22)
Operating lease right-of-use assets(10)(13)
Other(1)(2)
Total deferred tax liabilities(72)(94)
Net deferred tax liabilities$(9)$(20)
 Year Ended December 31,
(in millions)20192018
Deferred tax assets:  
Net operating losses (federal and state)$3
$3
Accrued expenses10
8
Accrued workers' compensation costs9
9
Stock based compensation3
8
Tax benefits relating to uncertain positions1

Tax credits (federal and state)7
7
Total33
35
Valuation allowance(5)(7)
Total deferred tax assets28
28
Deferred tax liabilities:  
Depreciation and amortization(27)(24)
Deferred service revenues(41)(62)
Prepaid health plan expenses(1)
Prepaid commission expenses(19)(9)
Total deferred tax liabilities(88)(95)
Net deferred tax liabilities$(60)$(67)

As of December 31, 20192021, we have an acquired federal net operating loss of $2 million which can be carried forward indefinitely. As of December 31, 2021 and 2018,2020, we have various state net operating loss carryforwards of $53$45 million and $61$39 million, respectively, most of which, if unused, will expire in years 20202022 through 2039 with the exception of an immaterial amount that will be carried forward indefinitely.2040. As of December 31, 20192021 and 2018,2020, we have state tax credit carryforwards (net of federal benefit) of $6 million and $7 million, respectively available that will begin expiring in 2021, which are offset by a valuation allowance of $4 million and $6 million as of December 31, 2019 and 2018, respectively.2026.
The provision for income taxes for the year ended December 31, 20192021 included $8$7 million of excess tax benefits resulting from equity incentive plan activities.
We previously paid Notices of Proposed Assessments disallowing employment tax credits totaling $11 million, plus interest of $4 million in connection with the IRS examination of Gevity HR, Inc. and its subsidiaries, which was acquired by TriNet in June 2009. TriNet filed suit in June 2016 to recover the disallowed credits, and the issue is being resolved through the litigation process. TriNet and the U.S. filed cross motions for summary judgment in federal district court. On September 17, 2018, the district court granted our motion for summary judgment and denied the U.S.'s motion. On January 18, 2019, the district court entered judgment in favor of TriNet in the amount of $15 million, plus interest. The U.S. filed a notice of appeal of the federal district court's decision on March 18, 2019. The U.S. filed its opening brief in the court of appeals on June 10, 2019 and we filed our answering brief on July 24, 2019 to which the government filed its reply brief on September 6, 2019. We will continueOral arguments occurred on March 11, 2020. On November 5, 2020, the court of appeals affirmed the district court’s judgement in favor of TriNet. The April 5, 2021 deadline for the IRS to vigorously defend our position throughpetition the litigation process. Given the uncertaintySupreme Court for review passed without a petition. TriNet received payment of the outcome of any appeal, it remains possible that our recoveryfull amount of the refund will be less than the total amountjudgment in dispute.

February 2022.
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FINANCIAL STATEMENTS

Valuation Allowance
We have recorded a valuation allowance to reflect the estimated amount of deferred tax assets that may not be realized.realized, related to state tax credits and state net operating loss carryforwards. A reconciliation of the beginning and ending amount of the valuation allowance is presented in the table below:
 Year Ended December 31,
(in millions)201920182017
Valuation allowance at January 1$7
$7
$6
Credited/ charged to net income(2)
1
Valuation allowance at December 315
7
7

Year Ended December 31,
(in millions)202120202019
Valuation allowance at January 1$5 $$
(Credited) Charged to net income — (2)
Valuation allowance at December 315 
Uncertain Tax Positions
As of December 31, 2019 and 2018, the total unrecognized tax benefits related to uncertain income tax positions, which would affect the effective tax rate if recognized, were $7 million and $6 million, respectively.
A reconciliation of the beginning and ending amount of unrecognized tax benefits (excluding interest and penalties) related to uncertain income tax provisions, which would affect the effective tax rate if recognized, is presented in the table below:
 Year Ended December 31,
(in millions)201920182017
Unrecognized tax benefits at January 1$6
$6
$1
Additions for tax positions of prior periods1
1
4
Additions for tax positions of current period1

1
Reductions for tax positions of prior period:   
Lapse of applicable statute of limitations(1)(1)
Unrecognized tax benefits at December 31$7
$6
$6

Year Ended December 31,
(in millions)202120202019
Unrecognized tax benefits at January 1$8 $$
Additions for tax positions of prior periods 
Additions for tax positions of current period1 
Reductions for tax positions of prior period:
Settlements with taxing authorities (1)— 
Lapse of applicable statute of limitations(1)— (1)
Adjustments to tax positions(1)— — 
Unrecognized tax benefits at December 31$7 $$
As of December 31, 20192021 and 2018,2020, the total amount of gross interest and penalties accrued were immaterial. The unrecognized tax benefit, including accrued interest and penalties, is included in other non-current liabilities on the consolidated balance sheet.sheets.
It is reasonably possible the amount of the unrecognized benefit could increase or decrease within the next twelve months, which would have an impact on net income.

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FINANCIAL STATEMENTS

NOTE 14. EARNINGS PER SHARE
Basic EPS is computed based on the weighted average shares of common stock outstanding during the period. Diluted EPS is computed based on those shares used in the basic EPS computation, plus potentially dilutive shares issuable under our equity-based compensation plans using the treasury stock method. Shares that are potentially anti-dilutive are excluded.
The following table presents the computation of our basic and diluted EPS attributable to our common stock:
 Year Ended December 31,
(in millions, except per share data)201920182017
Net income$212
$192
$178
Weighted average shares of common stock outstanding70
70
69
Basic EPS$3.04
$2.72
$2.57
    
Net income$212
$192
$178
Weighted average shares of common stock outstanding70
70
69
Dilutive effect of stock options and restricted stock units1
2
2
Weighted average shares of common stock outstanding71
72
71
Diluted EPS$2.99
$2.65
$2.49
    
Common stock equivalents excluded from income per
diluted share because of their anti-dilutive effect
1
1
2

 Year Ended December 31,
(in millions, except per share data)202120202019
Net income$338 $272 $212 
Weighted average shares of common stock outstanding66 67 70 
Basic EPS$5.13 $4.03 $3.04 
Net income$338 $272 $212 
Weighted average shares of common stock outstanding66 67 70 
Dilutive effect of stock options and restricted stock units1 
Weighted average shares of common stock outstanding67 68 71 
Diluted EPS$5.07 $3.99 $2.99 
Common stock equivalents excluded from income per
diluted share because of their anti-dilutive effect
1 
NOTE 15. 401(k) PLAN
The Company maintains a defined contribution 401(k) plan for the benefit of corporate employees. Under our 401(k) plan, eligible employees may elect to contribute based on their eligible compensation. The Company matches a portion of employee contributions, which amounted to $14$15 million, $11$12 million, and $6$14 million for the years ended December 31, 2019, 2018,2021, 2020, and 2017,2019, respectively.
We also maintain multiple employer defined contribution plans, which cover WSEs for client companies electing to participate in the plan and for their internal staff employees. We contribute, on behalf of each participating client, varying amounts based on the clients’ policies and serviced employee elections.
NOTE 16. RELATED PARTY TRANSACTIONS
We have service agreements with certain stockholders that we process their employees' payrolls and payroll taxes. From time to time, we also enter into sales and purchases agreements with various companies that have a relationship with our executive officers or members of our board of directors. The relationships are typically equity investment firm clients on which a board member serves in an executive role, an equity investment by the executive officer or board memberthose firms in the customer / a client/vendor company, or other clients/vendors on which our executive officer or board member isserves as a member of the customer / client/vendor company's board of directors. We have received $25$14 million, $20$22 million, and $22$25 million in total revenues from such related parties during the years ended December 31, 2019, 20182021, 2020 and 2017,2019, respectively.
We have also entered into various software license agreements with software service providers who have board members in common with us. We paid the software service providers $10$2 million, $5$1 million, and $6$10 million during the years ended December 31, 2019, 20182021, 2020 and 2017,2019, for services we received, respectively.

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FINANCIAL STATEMENTS

NOTE 17. SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)SUBSEQUENT EVENT
 Quarter ended
(in millions, except per share data)March 31June 30September 30December 31
2019    
Total revenues$934
$935
$969
$1,018
Insurance costs683
704
748
792
Operating income82
55
68
63
Net income63
46
55
48
Basic net income per share$0.91
$0.65
$0.80
$0.69
Diluted net income per share$0.89
$0.64
$0.78
$0.68
2018    
Total revenues$861
$850
$875
$917
Insurance costs641
630
647
692
Operating income71
76
62
42
Net income54
58
51
29
Basic net income per share$0.77
$0.82
$0.73
$0.41
Diluted net income per share$0.75
$0.80
$0.71
$0.40

In December 2021, we entered into a definitive agreement to acquire Zenefits, a leading cloud HR platform which provides innovative and intuitive HR, benefits, payroll and employee engagement software purpose-built for small and medium-size businesses. We believe the acquisition of Zenefits will allow us to diversify our product offering to include an Administrative Services Organization (ASO), enabling us to dynamically service SMBs throughout their lifecycle and expand the customers we serve.

The total purchase price of $220 million, subject to customary closing adjustments, will be settled by the issuance of up to $20 million of TriNet stock to eligible selling shareholders, with the remainder paid in cash. The acquisition is subject to customary closing conditions and regulatory approval and is expected to close in the first quarter of 2022.
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DISCLOSURE CONTROLS AND PROCEDURES




Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.
None.
Item 9A. Controls and Procedures
Evaluation of Disclosure Controls and Procedures
We have, with the participation of our Chief Executive Officer (CEO) and our Chief Financial Officer, (CFO), evaluated the effectiveness of our disclosure controls and procedures as of December 31, 2019,2021, as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended or the(the Exchange Act.Act).
Based on the evaluation of our disclosure controls and procedures as of December 31, 2019,2021, our Chief Executive Officer and Chief Financial Officer have concluded that the Company’s disclosure controls and procedures were effective as of December 31, 20192021 in ensuring that
i.information required to be disclosed by the Company in reports that it files or submits under the Exchange Act is accumulated and communicated to the Company’s management, including the Chief Executive Officer and Chief Financial Officer, to allow timely decisions regarding required disclosure and
ii.such information is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms.
i.information required to be disclosed by the Company in reports that it files or submits under the Exchange Act is accumulated and communicated to the Company’s management, including the Chief Executive Officer and Chief Financial Officer, to allow timely decisions regarding required disclosure and
ii.such information is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms.
Management’s Report on Internal Control Over Financial Reporting
We are responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) promulgated under the Exchange Act to provide reasonable assurance regarding the reliability of financial reporting and the preparation of the financial statements for external purposes in accordance with GAAP.
Due to inherent limitations, internal control over financial reporting is not intended to provide absolute assurance that a misstatement of our financial statements would be prevented or detected. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions or that the degree of compliance with policies or procedures may deteriorate.
We have performed an assessment of the effectiveness of our internal control over financial reporting as of December 31, 20192021 based upon criteria set forth in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.
Based on this assessment, we determined that our internal control over financial reporting was effective as of December 31, 2019.2021.
Deloitte & Touche LLP, our independent registered public accounting firm, has issued an audit report on the effectiveness of our internal control over financial reporting as of December 31, 2019.2021. This audit report appears in Part II, Item 8. Financial Statements and Supplementary Data, of this Form 10-K.
Changes in Internal Control Over Financial Reporting
There were no changes in our internal control over financial reporting that occurred during the three months ended December 31, 20192021 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.
Item 9B. Other Information.
Not applicable.


Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections.
Not applicable.
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MANAGEMENT AND CERTAIN SECURITY HOLDERS



PART III
Item 10. Directors, Executive Officers and Corporate Governance.
Information required by this item is incorporated by reference to TriNet Group Inc.’s Proxy Statement for its 20202022 Annual Meeting of ShareholdersStockholders to be filed with the SEC within 120 days after the end of the year ended December 31, 2019.2021.
Item 11. Executive Compensation.
Information required by this item is incorporated by reference to TriNet Group Inc.’s Proxy Statement for its 20202022 Annual Meeting of ShareholdersStockholders to be filed with the SEC within 120 days after the end of the year ended December 31, 2019.2021.
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.
Information required by this item is incorporated by reference to TriNet Group Inc.’s Proxy Statement for its 20202022 Annual Meeting of ShareholdersStockholders to be filed with the SEC within 120 days after the end of the year ended December 31, 2019.2021.
Item 13. Certain Relationships and Related Transactions, and Director Independence.
Information required by this item is incorporated by reference to TriNet Group Inc.’s Proxy Statement for its 20202022 Annual Meeting of ShareholdersStockholders to be filed with the SEC within 120 days after the end of the year ended December 31, 2019.2021.
Item 14. Principal AccountingAccountant Fees and Services.
Information required by this item is incorporated by reference to TriNet Group Inc.’s Proxy Statement for its 20202022 Annual Meeting of ShareholdersStockholders to be filed with the SEC within 120 days after the end of the year ended December 31, 2019.2021.


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FINANCIAL STATEMENT SCHEDULES




PART IV
Item 15. Exhibits, Financial Statement Schedules.
(a) The following documents are filed as a part of the report:
(1) The financial statements filed as part of this report are listed in the “Index to Financial Statements” under Part II, Item 8. Financial Statements and Supplementary Data.
(2) Financial statement schedules have been omitted, since the required information is not applicable or is not present in amounts sufficient to require submission of the schedule, or because the information required is included in the consolidated financial statements and accompanying notes included in this Form 10-K.
Item 16. Form 10-K Summary.
None.

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EXHIBITS

EXHIBIT INDEX
    Incorporated by Reference  
Exhibit
No.
 Description of Exhibit Form File No. Exhibit Filing 
Filed
Herewith
       
3.1  8-K 001-36373 3.1
 4/1/2014  
             
3.2  10-Q 001-36373 3.1
 11/2/2017  
       
3.3  S-1/A 333-192465 3.4
 3/4/2014  
       
4.1  8-K 001-36373 4.1
 2/2/2017  
             
4.2          X
             
10.1*  S-1/A 
333-192465

 10.3
 3/14/2014  
             
10.2* 

 10-Q 001-36373 10.1
 5/8/2015  
             
10.3*  S-1/A 333-192465 10.4
 3/4/2014  
             
10.4*  S-1/A 333-192465 10.6
 3/4/2014  
             
10.5*  10-Q 001-36373 10.1
 4/30/2018  
             
10.6*  10-Q 001-36373 10.2
 4/30/2018  
             
10.7*  10-Q 001-36373 10.3
 4/30/2018  
             
10.8* 

 10-Q 001-36373 10.4
 4/30/2018  
             
10.9*  10-Q 001-36373 10.2
 4/29/2019  
             

Incorporated by Reference 
Exhibit
No.
Description of ExhibitForm File No. Exhibit Filing 
Filed
Herewith
3.18-K001-363733.14/1/2014 
3.210-Q001-363733.1 11/2/2017
3.3S-1/A333-1924653.4 3/4/2014 
4.18-K001-363734.1 2/2/2017
4.210-K001-363734.2 2/13/2020
4.38-K001-363734.1 2/26/2021
4.48-K001-363734.22/26/2021
4.58-K001-3637310.12/26/2021
10.1*S-1/A
333-192465

10.33/14/2014
10.2*S-1/A333-19246510.4 3/4/2014
10.3*S-1/A333-19246510.6 3/4/2014
10.4*10-Q001-3637310.1 4/30/2018
10.5*10-Q001-3637310.3 4/30/2018
10.6*

10-Q001-3637310.4 4/30/2018
10.7*10-Q001-3637310.2 4/29/2019
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EXHIBITS

    Incorporated by Reference  
Exhibit
No.
 Description of Exhibit Form File No. Exhibit Filing 
Filed
Herewith
10.10*  10-Q 001-36373 10.3
 4/29/2019  
             
10.11*  10-Q 001-36373 10.1
 7/25/2019  
             
10.12*  10-Q 001-36373 10.2
 7/25/2019  
             
10.13*  S-1/A 333-192465 10.7
 3/14/2014  
       
10.14*  8-K 001-36373 N/A
 3/11/2015  
             
10.15*  10-K 001-36373 10.7
 2/27/2018  
             
10.16*  10-K 001-36373 10.10
 4/1/2016  
             
10.17*  8-K 001-36373 10.1
 5/23/2017  
             
10.18*  10-Q 001-36373 10.5
 4/30/2018  
             
10.19  S-1/A 333-192465 10.8
 3/4/2014  
             
10.20*  S-1/A 333-192465 10.9
 2/13/2014  
             
10.21*  10-Q 001-36373 10.1
 8/1/2017  
             
10.22*  10-Q 001-36373 10.2
 8/1/2017  
             
10.23*  10-K 001-36373 10.15
 2/27/2018  
             
10.24*  10-K 001-36373 10.22
 2/14/2019  
             
10.25* 

 10-Q 001-36373 10.1
 4/29/2019  
             
10.26*  8-K 001-36373 10.1
 12/22/2016  
             

Incorporated by Reference 
Exhibit
No.
Description of ExhibitForm File No. Exhibit Filing 
Filed
Herewith
10.8*10-Q001-3637310.1 7/25/2019
10.9*10-Q001-3637310.4 4/28/2020
10.10*10-Q001-3637310.44/26/2021
10.11*10-Q001-3637310.54/26/2021
10.12*S-1/A333-19246510.73/14/2014 
10.13*8-K001-36373N/A3/11/2015
10.14*10-K001-3637310.17X
10.15*10-K001-3637310.104/1/2016
10.16*10-Q001-3637310.54/30/2018
10.17S-1/A333-19246510.83/4/2014
10.18*S-1/A333-19246510.92/13/2014
10.19*10-Q001-3637310.28/1/2017
10.20X
10.21*10-K001-3637310.222/14/2019
10.22*8-K001-3637310.211/19/2020
10.23*10-Q001-3637310.110/26/2020
10.24*8-K 001-3637310.112/22/2016
21.1      X
TRINET942021 FORM 10-K
90


EXHIBITS

EXHIBITS
Incorporated by Reference
Exhibit
No.
Description of ExhibitFormFile No.ExhibitFiling
Filed
Herewith
10.27*23.18-K001-3637310.1
6/22/2018
21.1X
23.1X
24.1
31.1X
31.2X
32.1**X
101.INSInline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.X
101.SCHInline XBRL Taxonomy Extension Schema Document.X
101.SCHCALInline XBRL Taxonomy Extension SchemaCalculationSchema Calculation Linkbase Document.X
101.CALDEFInline XBRL Taxonomy Extension CalculationDefinitionCalculation Definition Linkbase Document.X
101.DEFLABInline XBRL Taxonomy Extension DefinitionLabelDefinition Label Linkbase Document.X
101.LABPREInline XBRL Taxonomy Extension LabelPresentationLabel Presentation Linkbase Document.X
101.PRE104XBRL Taxonomy Extension Presentation Linkbase Document.CoverDocument. Cover Page Interactive Data File (embedded with the Inline XBRL document).X
*Constitutes a management contract or compensatory plan or arrangement.
**Document has been furnished, is deemed not filed and is not to be incorporated by reference into any of the Company’s filings under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, irrespective of any general incorporation language contained in any such filing.

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SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Dublin, State of California, on the day of 1314th February, 2020.2022.
 
TRINET GROUP, INC.
Date: February 13, 202014, 2022By:/s/ Burton M. Goldfield
Burton M. Goldfield
Chief Executive Officer
Date: February 13, 202014, 2022By:/s/ Richard BeckertKelly Tuminelli
Richard BeckertKelly Tuminelli
Chief Financial Officer
KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Burton M. Goldfield, Richard BeckertKelly Tuminelli and Samantha Wellington, and each of them, as his or her true and lawful attorneys-in-fact and agents, each with the full power of substitution, for him or her and in his or her name, place or stead, in any and all capacities, to sign any amendments to this report and to file the same, with exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming all that any of said attorneys-in-fact and agents, or their or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

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Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.
SignatureTitleDate
SignatureTitleDate
/s/ Burton M. Goldfield
Chief Executive Officer (principal executive officer)
February 13, 202014, 2022
Burton M. Goldfield
/s/ Richard BeckertKelly Tuminelli
Chief Financial Officer (principal financial officer)
February 13, 2020
Richard Beckert
/s/ Michael P. Murphy
Chief Accounting Officer ( and principal accounting officer)
February 13, 202014, 2022
Michael P. MurphyKelly Tuminelli
/s/ Michael J. AngelakisDirectorFebruary 13, 202014, 2022
Michael J. Angelakis
/s/ Katherine August-deWildeDirectorFebruary 13, 202014, 2022
Katherine August-deWilde
/s/ Martin BabinecDirectorFebruary 13, 202014, 2022
Martin Babinec
/s/ H. Raymond BinghamDirectorFebruary 13, 202014, 2022
H. Raymond Bingham
/s/ Paul ChamberlainDirectorFebruary 13, 202014, 2022
Paul Chamberlain
/s/ Kenneth GoldmanRalph ClarkDirectorFebruary 13, 202014, 2022
Kenneth GoldmanRalph Clark
/s/ Shawn GuertinMaria Contreras-SweetDirectorFebruary 13, 202014, 2022
Shawn GuertinMaria Contreras-Sweet
/s/ David C. HodgsonDirectorFebruary 13, 202014, 2022
David C. Hodgson
/s/ Dr. Jacqueline KosecoffDirectorFebruary 13, 202014, 2022
Dr. Jacqueline Kosecoff
/s/ Wayne B. LowellDirectorFebruary 13, 202014, 2022
Wayne B. Lowell
/s/ Myrna SotoDirectorFebruary 14, 2022
Myrna Soto

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