Page 1 of 11
                                                         Exhibit Index on Page 2

                                   FORM 11-K

                                 UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549


Annual Report Pursuant to Section 15(d) of the Securities Exchange Act
of 1934




(Mark One)

  [X]   ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
        EXCHANGE ACT OF 1934.
             For the fiscal year ended:  December 31, 1999

  OR

  [ ]   TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE
        ACT OF 1934.
             For the transition period from       to



Commission file number     1- 3208

  A.    Full title of the plan and the address of the plan, if
        different from that of the issuer named below:

        National Linen Service Retirement and 401(k) Plan for
          Eligible Associates

  B.    Name of issuer of the securities held pursuant to the plan and
        the address of the principal executive office:

        National Service Industries, Inc.
        1420 Peachtree Street, NE
        Atlanta, Georgia 30309



Page 2

REQUIRED INFORMATION

The following documents are filed as a part of this report:

1.   Financial Statements


     Plan  financial  statements  prepared  in  accordance  with  the  financial
     reporting requirements of ERISA include the following:

     Report of Independent Public Accountants

     Statements of Net Assets Available for Benefits as of December
     31, 1999 and 1998

     Statement  of Changes  in Net  Assets  Available  for  Benefits for the
     Year Ended December 31, 1999

     Notes to Financial Statements

2.   Exhibits
                                                             Sequentially
                                                               Numbered
     The following exhibit is filed with this report:            Page

     23     Consent of Arthur Andersen LLP                       11



SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
trustees (or other persons who administer  the employee  benefit plan) have duly
caused this annual report to be signed on its behalf by the undersigned hereunto
duly authorized.

                              National Linen Service Retirement and 401(k) Plan
                              for Eligible Associates

Date: June 28, 2000           By:   National Service Industries, Inc.
                                    Plan Administrator

                              By:    /s/ James S. Balloun
                              Name:  James S. Balloun
                              Title: Chairman and Chief Executive Officer


                                                                          Page 3

                             National Linen Service
               Retirement and 401(k) Plan for Eligible Associates


                              Financial Statements
                        as of December 31, 1999 and 1998
                         Together With Auditors' Report



REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


To the Plan Administrator of
National Linen Service Retirement
and 401(k) Plan for Eligible Associates:


We have audited the accompanying statements of net assets available for benefits
of National Linen Service Retirement and 401(k) Plan for Eligible  Associates as
of December 31, 1999 and 1998 and the related statement of changes in net assets
available  for benefits for the year ended  December 31, 1999.  These  financial
statements are the responsibility of the Plan's  management.  Our responsibility
is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with auditing standards generally accepted
in the United States. Those standards require that we plan and perform the audit
to obtain reasonable  assurance about whether the financial  statements are free
of material misstatement. An audit includes examining, on a test basis, evidence
supporting  the amounts and  disclosures in the financial  statements.  An audit
also includes assessing the accounting principles used and significant estimates
made by  management,  as well as  evaluating  the  overall  financial  statement
presentation.  We believe  that our audits  provide a  reasonable  basis for our
opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all material  respects,  the net assets available for benefits of the Plan as of
December  31,  1999 and 1998 and the  changes  in its net assets  available  for
benefits for the year ended  December  31, 1999 in  conformity  with  accounting
principles generally accepted in the United States.



/s/ ARTHUR ANDERSEN

Atlanta, Georgia
June 8, 2000



Page 4

                             NATIONAL LINEN SERVICE

               RETIREMENT AND 401(k) PLAN FOR ELIGIBLE ASSOCIATES

                 STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS

                           DECEMBER 31, 1999 AND 1998








                                                  1999             1998
                                              ------------     ------------
INVESTMENT IN NSI DC TRUST,
      at fair value (Notes 2 and 3)             $4,212,076       $4,800,150

CONTRIBUTIONS RECEIVABLE--PARTICIPANT               11,158           10,267
                                              ------------     ------------
NET ASSETS AVAILABLE FOR BENEFITS               $4,223,234       $4,810,417
                                              ============     ============









The accompanying notes are an integral part of these statements.



                                                                          Page 5


                             NATIONAL LINEN SERVICE

               RETIREMENT AND 401(k) PLAN FOR ELIGIBLE ASSOCIATES

            STATEMENT OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS

                      FOR THE YEAR ENDED DECEMBER 31, 1999






CONTRIBUTIONS--participant                                      $   804,227

NET GAIN FROM INVESTMENT IN NSI DC TRUST (Note 3)                   303,163

BENEFITS PAID TO PARTICIPANTS                                      (776,440)

INTERPLAN TRANSFERS                                                (918,133)
                                                                ------------
NET DECREASE                                                       (587,183)

NET ASSETS AVAILABLE FOR BENEFITS, beginning of year              4,810,417
                                                                ------------
NET ASSETS AVAILABLE FOR BENEFITS, end of year                  $ 4,223,234
                                                                ============






The accompanying notes are an integral part of this statement.



Page 6


                             NATIONAL LINEN SERVICE

               RETIREMENT AND 401(k) PLAN FOR ELIGIBLE ASSOCIATES

                          NOTES TO FINANCIAL STATEMENTS

                           DECEMBER 31, 1999 AND 1998



  1.     PLAN DESCRIPTION

The following is a brief  description of the National  Linen Service  Retirement
and 401(k) Plan for  Eligible  Associates  (the  "Plan") of the  National  Linen
Service  Division  (the  "Company")  of  National  Service  Industries,  Inc. of
Georgia, a wholly owned subsidiary of National Service Industries, Inc. ("NSI").
This  description  is provided for  informational  purposes  only.  Participants
should refer to the plan agreement for more complete information.

General

The Plan is a defined  contribution  plan established  effective January 1, 1994
under the provisions of Section 401(a) of the Internal Revenue Code ("IRC"). The
Plan covers all eligible  nonunion,  nonmanagement  employees of the Company who
have  attained  the age of 20.5 with at least six months of  service.  Effective
January 1, 1999, the Plan's  coverage  expanded to include all nonunion,  hourly
paid  employees  employed at a linen or uniform  services  plant operated by the
Company. The Plan is subject to the provisions of the Employee Retirement Income
Security Act of 1974, as amended.

Contributions

Participants  may elect to contribute  between 1% and 15% (effective  January 1,
1999) of  before-tax  compensation,  as defined in the Plan,  subject to certain
limitations under the IRC.

No employer contributions are permitted.

Vesting

Participants are always fully vested in their individual  contributions  and the
earnings thereon.

Administration

All administrative expenses of the Plan were paid by the Company during the year
ended December 31, 1999.

Participants' Accounts

Individual  accounts  are  maintained  for each of the  Plan's  participants  to
reflect the particular participant's  contributions as well as the participant's
share of the  Plan's  income  and any  related  investment  management  fees and
expenses.

                                                                          Page 7

If a  participant  transfers  employment  to a class of  employees  eligible  to
participate in the Company's plan for management associates,  such participant's
account balance  automatically  transfers to that management  associates plan as
soon as reasonably  practicable following his/her eligibility for the management
associates  plan.  Such  transfers  are shown on the statement of changes in net
assets available for benefits as interplan transfers.

Investment in Master Trust

The Plan's  assets are  commingled  in the  National  Service  Industries,  Inc.
Defined  Contribution  Plans Master Trust (the "NSI DC Trust") together with the
assets  of  certain  defined  contribution  plans of other  NSI  divisions.  The
investments of the NSI DC Trust are subject to certain administrative guidelines
and  limitations  as to the type and amount of  securities  held.  Certain  fund
assets are allocated to selected independent investment managers to invest under
these general guidelines.

Effective  January 1, 1998,  INVESCO Trust Company was appointed  trustee of the
NSI DC Trust.

Investment Options

The separate  investment  options made available  under the Plan may be changed,
eliminated, or modified from time to time by the investment committee of the NSI
DC Trust.  Participants make their investment  elections in 5% increments,  with
changes allowed on a daily basis.

The separate investment options offered by the Plan are as follows:

         o    Diversified Equity Fund.  This fund is invested in a mutual fund
              which is designed to invest in a broad range of common stocks
              providing capital growth.

         o    Stable Value Fund. This is a fixed income fund designed to provide
              a steady level of current income while focusing on preservation of
              principal.  The  majority  of this  fund's  assets are  investment
              contracts ("GICs") and synthetic GICs with insurance companies and
              banks.  This fund is  managed  by  INVESCO  Trust  Company  or its
              affiliates.

         o    Balanced  Fund.  This fund is invested in a  commingled  fund that
              invests in a changing mix of  high-quality  stocks and bonds.  The
              fund is designed  to provide  capital  growth and  current  income
              while limiting the risk of principal loss. This fund is managed by
              INVESCO Trust Company or its affiliates.

         o    NSI Stock  Fund.  This fund is  invested  primarily  in NSI common
              stock, although it may hold other short-term investments from time
              to time.  A  participant  may not direct  more than 50% of his/her
              account balance to be invested in this fund.

         o    International  Fund.  This fund is invested in a mutual fund that
              invests in the stock of  non-U.S.  companies  and is  designed to
              provide long-term growth.

         o    Index Fund.  This fund is invested in a mutual fund that  invests
              in all of the stocks in the Standard & Poor's 500 Composite Stock
              Price Index.

         o    Small  Company  Fund.  This fund is invested in a mutual fund that
              invests in small or emerging  companies  that show  potential  for
              increased  size and  profitability.  The fund  seeks  little or no
              current  income.  This fund is managed by INVESCO Trust Company or
              its affiliates.

Page 8

         o    Bond Index Fund. This fund is invested in a collective trust that
              invests in a well-diversified portfolio that is representative of
              the domestic investment-grade bond market.

Loans to Participants

The  Plan  permits  loans  to  participants  up to  the  lesser  of  50%  of the
participant's  vested account  balance or $50,000.  A participant has up to five
years to repay the principal  and interest,  unless the loan is for the purchase
of a primary  residence,  in which case the repayment period will be established
at the time the loan is approved.  Loan processing fees are charged  directly to
the participant's account.  Interest rates on loans to participants are based on
market rates, as determined by the plan  administrator.  The interest rate as of
December 31, 1999 was 9%.

Interest on loans is included  in the net gain from  investment  in NSI DC Trust
and is  allocated  to each  investment  fund based on  participants'  investment
elections.

Benefits

A participant is entitled to receive the  distribution of his/her vested account
balance upon death,  disability,  retirement  (age 65), or other  termination of
employment.  These  benefits are payable in a lump-sum  amount or can be paid in
installments at the participant's  election if his/her vested balance is greater
than $5,000 and he/she is age 55 or older.

Benefits are payable in cash, except that any portion of a participant's account
balance  which is invested in the NSI Stock Fund is  distributed  in the form of
shares  of NSI  common  stock,  with  fractional  shares  paid in  cash.  If the
equivalent number of shares to be distributed to a participant is less than 100,
then the  participant  may elect to  receive  cash  instead of shares as his/her
distribution.

Hardship   withdrawals  may  be  made  upon  proven  financial   hardship  of  a
participant,  as defined in the plan  agreement  and as  approved  by the Plan's
retirement committee.

Plan Termination

Although the Company  intends for the Plan to be  permanent,  the Plan  provides
that the Company has the right to discontinue  contributions or to terminate the
Plan at any time. In the event of plan  termination,  each participant  shall be
vested in the balance of his/her account and his/her  proportionate share of any
future adjustments.


  2.     SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Accounting

The  accounts  of the Plan are  maintained  by the  trustee on the cash basis of
accounting.  The accompanying  financial statements have been prepared using the
accrual  method  of  accounting  by  application  of  memorandum  entries.   The
preparation  of financial  statements  in  conformity  with  generally  accepted
accounting  principles  requires  the Plan's  management  to use  estimates  and
assumptions that affect the accompanying  financial  statements and disclosures.
Actual results could differ from these estimates.


                                                                          Page 9

Reclassifications

Statement of Position  ("SOP")  99-3,  "Accounting  for and Reporting of Certain
Defined  Contribution Plan Investments and Other Disclosure Matters," eliminates
the requirement for a defined contribution plan to disclose participant-directed
investment  programs.  SOP 99-3 was  adopted  for the 1999 plan  year,  and 1998
financial   statement   amounts  have  been   reclassified   to  eliminate   the
participant-directed   investment  program   disclosures.   In  addition,   unit
information  presented  in  the  prior  year's  financial  statements  has  been
eliminated in accordance with SOP 99-3.

Investment Valuation

Investments of the NSI DC Trust,  except for the GICs, are stated at fair value,
as determined by the trustee from quoted market prices.  Securities  traded on a
national  exchange  are  valued  at the last  reported  sales  price on the last
business day of the plan year; investments traded in the over-the-counter market
and listed securities for which no sale was reported on the last day of the plan
year are valued at the last reported bid price.

GICs included in the NSI DC Trust are fully benefit-responsive and are therefore
carried at contract  value (cost plus  accrued  interest) by the NSI DC Trust in
accordance  with SOP 94-4,  "Reporting of  Investment  Contracts for Welfare and
Pension Plans." At December 31, 1999 and 1998,  contract value approximates fair
value. At December 31, 1999, the weighted  average  crediting  interest rate was
6.18%.  For the year ended  December 31, 1999, the annual yield on the GICs held
by the NSI DC Trust was 6.4%.  For certain of the GICs held by the NSI DC Trust,
crediting  interest rates may be changed if certain events occur,  such as early
retirements,  plant  closings,  etc., but in no case are they adjusted to a rate
less than 0%.

GICs are  subject  to credit  risk based on the  ability of the  issuers to meet
interest or principal payments, or both, as they become due.

Certain  GICs  included in the NSI DC Trust are  synthetic;  that is, the NSI DC
Trust owns certain fixed-income  securities,  and the contract issuer provides a
"wrapper"  that  guarantees  a  fixed  rate  of  return  and  provides   benefit
responsiveness.  At  December  31,  1999 and 1998,  the value of the  underlying
assets  of the  synthetic  GICs  (determined  from  quoted  market  prices)  was
$54,030,000 and $48,749,000,  respectively, and the value of the related wrapper
contracts was $990,000 and $(1,232,000), respectively.


  3.     NSI DC TRUST

Investment Income

Investment  income of the NSI DC Trust for the year ended  December  31, 1999 is
summarized as follows:

        Interest income                                            $  4,392,012
        Dividends on NSI common stock                                   492,305
        Net depreciation in fair value of NSI common stock           (3,126,435)
        Net loss from common/collective trusts                         (389,640)
        Net income from mutual funds                                 21,103,949
                                                                   -------------
                      Total investment income                      $ 22,472,191
                                                                   =============

Page 10

Net Assets

The net assets of the NSI DC Trust are as follows at December 31, 1999 and 1998:

                                                   1999                 1998

        Mutual funds                           $150,101,844         $119,999,722
        Common/collective trusts                 61,734,231           72,307,360
        Guaranteed investment contracts          62,398,546           59,224,919
        NSI common stock                         11,026,746           15,348,609
        Loans receivable from participants        7,942,464            7,590,683
        Cash equivalents                          4,873,957                    0
                                               ------------         ------------
                                                298,077,788          274,471,293
        Accrued investment income                    23,712                6,608
        Adjustments for pending trades              219,969               19,658
        Accrued expenses and other                  (28,248)                   0
                                               ------------         ------------
        Net assets                             $298,293,221         $274,497,559
                                               ============         ============

The allocation of the net assets of the NSI DC Trust to  participating  plans is
based on participant units and is as follows as of December 31, 1999 and 1998:



                                                          1999                         1998
                                                  Amount       Percent         Amount       Percent
                                               ------------------------     ------------------------
                                                                                
National Linen Service Retirement and 401(k)
    Plan for Eligible Associates               $  4,212,076      1.41%      $  4,800,150      1.75%
All other plans                                 294,081,145     98.59        269,697,409     98.25
                                               ------------------------     ------------------------
              Total                            $298,293,221    100.00%      $274,497,559    100.00%
                                               ========================     =========================



Investment in NSI Common Stock

As of December 31, 1999 and 1998, approximately 3.7% and 5.6%, respectively,  of
the NSI DC Trust's net assets were  invested in the common stock of NSI, a party
in interest to the Plan.


  4.     TAX STATUS

The Plan has received a favorable determination letter from the Internal Revenue
Service  dated July 19, 1995 stating  that the Plan was  designed in  accordance
with plan design  requirements  as of that date. The Plan has been amended since
receiving the determination  letter.  However,  the plan administrator  believes
that the Plan is currently designed and is being operated in compliance with the
applicable  requirements of the IRC. Therefore,  the plan administrator believes
that the Plan was  qualified  and that the related  trust was  tax-exempt  as of
December 31, 1999 and 1998.