EXHIBIT 10.12
                              EMPLOYMENT AGREEMENT
                              --------------------

         This Employment  Agreement (this  "Agreement") is made and entered into
as of the 17th day of August,  1999,  between  Concentra  Managed Care,  Inc., a
Delaware corporation (the "Company"), and Richard A. Parr II ("Executive").

                                   WITNESSETH:

         WHEREAS,  Executive  desires to continue as Executive  Vice  President,
General Counsel,  and Secretary of the Company and to remain an integral part of
its management who participates in the decision-making process relative to short
and long-term planning and policy for the Company; and

         WHEREAS, it is the desire of the Board of Directors of the Company (the
"Board of Directors")  to assure itself of the management  services of Executive
by directly engaging Executive as an officer of the Company and its subsidiaries
and affiliates; and

         WHEREAS,  Executive  is  desirous  of  committing  himself to serve the
Company on the terms herein provided.

         NOW, THEREFORE, in consideration of the foregoing and of the respective
covenants and agreements set forth below, the parties hereto agree as follows:

         1.  EMPLOYMENT AND TERM. The Company hereby agrees to employ  Executive
as its Executive Vice President,  General Counsel, and Secretary,  and Executive
hereby agrees to accept such  employment,  on the terms and conditions set forth
herein,  for the  period  commencing  on the date of the  effectiveness  of this
Agreement  pursuant to Section 14 hereof (the "Effective  Date") and expiring as
of 11:59 p.m. on the second  anniversary  of the Effective  Date (unless  sooner
terminated as  hereinafter  set forth) (the  "Term");  PROVIDED,  HOWEVER,  that
commencing on such second  anniversary  date,  and each  anniversary of the date
hereof  thereafter,  the Term of this Agreement shall  automatically be extended
for one  additional  year  unless at least  thirty  (30) days prior to each such
anniversary  date,  the Company or Executive  shall have given notice that it or
he, as applicable, does not wish to extend this Agreement.

         2.       DUTIES AND RESTRICTIONS.

                  (a)  DUTIES  AS  EMPLOYEE  OF THE  COMPANY.  Executive  shall,
subject to the supervision of the Company's Chief  Executive  Officer,  serve as
the Company's Executive Vice President, General Counsel, and Secretary, with all
such powers as may be set forth in the Company's  Bylaws with respect to, and/or
are reasonably incident to, such officerships.

                  (b) OTHER  DUTIES.  Executive  agrees to serve as requested by
the Company as a director of the Company's  subsidiaries  and  affiliates and in
one  or  more  executive  offices  of  any of  the  Company's  subsidiaries  and
affiliates;  PROVIDED, that the Company indemnifies Executive

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for serving in any and all such capacities in a manner acceptable to the Company
and  Executive.  Executive  agrees  that he shall not be entitled to receive any
compensation  for serving in any  capacities of the Company's  subsidiaries  and
affiliates  other than the  compensation  to be paid to Executive by the Company
pursuant to this Agreement.

                  (c)  NONCOMPETITION.  Executive agrees that he will not, for a
period of one year following the termination of his employment with the Company,
(1) solicit the employment  of,  endeavor to entice away from the Company or its
subsidiaries  or  affiliates or otherwise  interfere  with any person who was an
employee  of or  consultant  to  the  Company  or any  of  its  subsidiaries  or
affiliates  during the one year period  preceding  such  termination,  or (2) be
employed by,  associated  with, or have any interest in,  directly or indirectly
(whether  as  principal,  director,  officer,  employee,  consultant,   partner,
stockholder,  trustee,  manager,  or  otherwise),  any  occupational  healthcare
company or managed care company  which has a principal  line of business that is
directly  competitive  with the Company or its subsidiaries or affiliates in any
geographical  area in which the Company or its subsidiaries or affiliates engage
in business at the time of such  termination  or in which any of them,  prior to
termination  of  Executive's  employment,  evidenced in writing its intention to
engage  in  business.  Notwithstanding  the  foregoing,  Executive  shall not be
prohibited from owning five percent or less of the outstanding equity securities
of any entity  whose  equity  securities  are  listed on a  national  securities
exchange or publicly traded in any over-the-counter market.

                  (d)   CONFIDENTIALITY.   Executive  shall  not,   directly  or
indirectly,  at any time during or following the  termination  of his employment
with the Company, reveal, divulge, or make known to any person or entity, or use
for Executive's personal benefit (including, without limitation, for the purpose
of  soliciting  business,  whether or not  competitive  with any business of the
Company or any of its  subsidiaries  or affiliates),  any  information  acquired
during  the  course  of  employment  hereunder  with  regard  to the  financial,
business,  or  other  affairs  of the  Company  or any  of its  subsidiaries  or
affiliates  (including,  without  limitation,  any list or record of  persons or
entities with which the Company or any of its subsidiaries or affiliates has any
dealings), other than (1) material already in the public domain, (2) information
of a type not considered confidential by persons engaged in the same business or
a similar  business to that  conducted  by the  Company,  or (3)  material  that
Executive is required to disclose under the following circumstances:  (A) in the
performance  by  Executive  of  his  duties  and   responsibilities   hereunder,
reasonably  necessary  or  appropriate  disclosure  to another  employee  of the
Company or to  representatives  or agents of the  Company  (such as  independent
public  accountants  and legal  counsel);  (B) at the express  direction  of any
authorized  governmental  entity;  (C)  pursuant  to a subpoena  or other  court
process; (D) as otherwise required by law or the rules,  regulations,  or orders
of any applicable regulatory body; or (E) as otherwise necessary, in the opinion
of counsel for  Executive,  to be disclosed by Executive in connection  with the
prosecution of any legal action or proceeding initiated by Executive against the
Company or any  subsidiary  or  affiliate  of the  Company or the defense of any
legal action or  proceeding  initiated  against  Executive in his capacity as an
employee  or  director  of the Company or any  subsidiary  or  affiliate  of the
Company. Executive shall, at any time requested by the Company (either during or
after his  employment  with the  Company),  promptly  deliver to the Company all
memoranda,  notes, reports,  lists, and other documents (and all copies thereof)
relating to the business of the

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Company or any of its  subsidiaries  or affiliates  which he may then possess or
have under his control.

         3.       COMPENSATION AND RELATED MATTERS.

                  (a) BASE SALARY. Executive shall receive a base salary paid by
the Company  ("Base  Salary") at the annual rate of Two Hundred  Fifty  Thousand
Dollars   ($250,000)  during  each  calendar  year  of  the  Term,   payable  in
substantially  equal monthly  installments (or such other more frequent times as
executives of the Company  normally are paid). In addition,  the Company's Board
of  Directors  or Option and  Compensation  Committee  of the Board of Directors
shall, in good faith,  consider  granting  increases in the Base Salary based on
such factors as Executive's  performance and the growth and/or  profitability of
the Company, but the Company shall have no obligation to grant such increases in
compensation.

                  (b) BONUS PAYMENTS. Executive shall be entitled to receive, in
addition  to the Base  Salary,  such  bonus  payments,  if any,  as the Board of
Directors or the Option and Compensation Committee of the Board of Directors may
specify.

                  (c)  EXPENSES.  During the term of his  employment  hereunder,
Executive shall be entitled to receive prompt  reimbursement  for all reasonable
expenses  incurred  by him (in  accordance  with  the  policies  and  procedures
established  by the Board of  Directors  for its senior  executive  officers) in
performing  services  hereunder,   provided  that  Executive  properly  accounts
therefor in accordance with Company policy.

                  (d) OTHER BENEFITS.  The Company shall not make any changes in
any employee benefit plans or other arrangements in effect on the date hereof or
subsequently  in  effect  in  which   Executive   currently  or  in  the  future
participates (including,  without limitation,  each pension and retirement plan,
supplemental pension and retirement plan, savings and profit sharing plan, stock
or unit ownership plan,  stock or unit purchase plan, stock or unit option plan,
life insurance plan,  medical  insurance  plan,  disability  plan,  dental plan,
health-and-accident  plan, or any other similar plan or arrangement)  that would
adversely affect Executive's rights or benefits  thereunder,  unless such change
occurs  pursuant to a program  applicable  to all  executives of the Company and
does not  result in a  proportionately  greater  reduction  in the  rights of or
benefits to  Executive  as compared  with any other  executive  of the  Company.
Executive  shall be entitled to  participate  in or receive  benefits  under any
employee benefit plan or other  arrangement made available by the Company now or
in the future to its senior  executive  officers and key  management  employees,
subject to and on a basis  consistent  with the terms,  conditions,  and overall
administration of such plan or arrangement.  Nothing paid to Executive under any
plan or arrangement presently in effect or made available in the future shall be
deemed  to be in lieu of the  Base  Salary  payable  to  Executive  pursuant  to
paragraph (a) of this Section 3.

                  (e)  VACATIONS.  Executive  shall be entitled to ten (10) paid
vacation days for the period from the date of this  Agreement  through  December
31, 1999.  Executive shall be entitled to twenty (20) paid vacation days in each
calendar year commencing on or after January 1, 2000, or such additional  number
as may be determined by the Board of Directors  from time to time.

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For purposes of this Section 3(e), weekends shall not count as vacation days and
Executive  shall also be entitled to all paid  holidays  given by the Company to
its senior executive officers.

                  (f)  PERQUISITES.  Executive  shall be entitled to receive the
perquisites and fringe benefits appertaining to senior executive officers of the
Company in accordance  with any practice  established by the Board of Directors.
In  the  event  Executive's  employment  hereunder  is  terminated  (whether  by
Executive  or the  Company) for any reason  whatsoever  (other than  Executive's
death), then the Company shall, at Executive's written request and to the extent
permitted by the terms of such policies and applicable law, assign and convey to
Executive any life insurance  policies  maintained by the Company on the life of
Executive,  who shall thereafter be solely responsible,  at his election, to pay
all  premiums  payable  after such  assignment  and  conveyance  to maintain the
coverage under such policies with respect to Executive.  Executive  shall not be
required  to pay any  money or other  consideration  to the  Company  upon  such
assignment  and  conveyance,  it being  acknowledged  and agreed by the  parties
hereto that Executive's  execution and delivery hereof  constitute  adequate and
satisfactory consideration for such assignment and conveyance.

                  (g)  PRORATION.  Excepting  only payments  pursuant to Section
3(b) for calendar year 1999 (which  payments shall be based upon a full calendar
year), any payments or benefits payable to Executive hereunder in respect of any
calendar  year during  which  Executive is employed by the Company for less than
the  entire  year,   unless  otherwise   provided  in  the  applicable  plan  or
arrangement,  shall be  prorated in  accordance  with the number of days in such
calendar year during which he is so employed.

         4. EXECUTIVE'S OFFICE AND RELOCATION. Executive shall primarily perform
his duties and  responsibilities  hereunder at the Company's  offices located at
5080  Spectrum  Drive,  Addison,  Texas (or at such  other  location  within the
Dallas,  Texas,  metropolitan  area,  to which  the  Company  may in the  future
relocate such  principal  executive  offices),  except for  reasonable  required
travel on the Company's  business.  If the Company requests  Executive to report
for the performance of his services hereunder on a regular or permanent basis at
any location or office more than thirty-five (35) miles from the office location
described in the first sentence of this Section 4, and Executive  agrees to such
change,  the Company  shall pay  Executive's  reasonable  relocation  and moving
expenses,  including,  but not  limited  to,  the cost of moving  his  immediate
family,  expenses  incurred  while  seeking  new  housing  (including  travel by
Executive's  spouse) and temporary living expenses  incurred by Executive or his
family for up to one hundred eighty (180) days.

         5. TERMINATION.  Executive's  employment hereunder may be terminated by
the Company or Executive,  as applicable,  without any breach of this Agreement,
only under the following circumstances.

                  (a)   DEATH.  Executive's employment hereunder shall terminate
upon his death.

                  (b) DISABILITY.  If, as a result of Executive's incapacity due
to physical or mental illness, Executive shall have been unable, with reasonable
accommodation,   to  perform  the

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essential functions of his duties and responsibilities  hereunder on a full time
basis for one hundred eighty (180) consecutive  calendar days, and within thirty
(30) days after written  notice of  termination is given (which may occur before
or after the end of such one hundred  eighty (180) day period)  Executive  shall
not have  returned to the  performance  of his  material  managerial  duties and
responsibilities  hereunder  on a full time basis,  the  Company  may  terminate
Executive's employment hereunder.

                  (c) CAUSE.  Subject to the  provisions  of Section  7(d),  the
Company may terminate  Executive's  employment hereunder for Cause. For purposes
of this  Agreement,  the Company  shall have  "Cause" to  terminate  Executive's
employment hereunder upon:

                           (1)  Executive's  willful or  intentional  failure to
perform or gross  negligence in the  performance of Executive's  material duties
and  responsibilities  hereunder  (other than any such  failure  resulting  from
Executive's  incapacity  due to physical or mental illness or any such actual or
anticipated  failure  after the  issuance  of a Notice of  Termination  for Good
Reason (as hereinafter defined) by Executive);

                           (2) The  commission  by  Executive of  dishonesty  or
fraud of a material  nature in  connection  with the  performance  of his duties
hereunder,  or  willful  or  intentional  misconduct  of a  material  nature  in
connection with the performance of his duties hereunder;

                           (3) The conviction of Executive, or the entering of a
plea of nolo contendere by Executive, with respect to a felony;

                           (4) Unprofessional or unethical conduct of a material
nature by Executive in connection with the  performance of his duties  hereunder
as determined in a final adjudication of any board, institution, organization or
governmental  agency  having any  privilege or right to pass upon the conduct of
Executive;

                           (5)  Intentional,   willful,   or  grossly  negligent
conduct  by  Executive  which  is  materially  detrimental  to  the  reputation,
character,  business, or standing of the Company, including, without limitation,
the use by Executive of a controlled substance; or

                           (6)  The  continued  breach  by  Executive  of any of
Executive's material obligations under this Agreement.

                  (d)  TERMINATION  BY EXECUTIVE.  Subject to the  provisions of
Section  7(c),  and  at his  option,  Executive  may  terminate  his  employment
hereunder (1) for Good Reason and/or for Additional Reason, or (2) if his health
should become impaired to an extent that makes the continued  performance of his
duties hereunder hazardous to his physical or mental health or his life.

                  For purposes of this Agreement, the termination of Executive's
employment  hereunder by Executive  because of the occurrence of any one or more
of the following events shall be deemed to have occurred for "Good Reason":

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                           (A) a  material  change  in the  nature  or  scope of
Executive's authorities, status, powers, functions, duties, responsibilities, or
reporting  relationships  that is  determined  by  Executive in good faith to be
adverse to those existing before such change;

                           (B) any removal by the Company of Executive  from, or
any failure to reelect Executive to, the positions indicated in Section 1 hereof
except in connection  with  termination of  Executive's  employment for Cause or
disability;

                           (C) a  reduction  in  Executive's  Base Salary or any
other  failure  by the  Company  to comply  with  Section  3 hereof  that is not
consented to or approved by Executive;

                           (D) the relocation of Executive's  office at which he
is to perform his duties and responsibilities hereunder to a location outside of
the Dallas, Texas,  metropolitan area, or a materially adverse alteration in the
office   space   within   which   Executive   is  to  perform   his  duties  and
responsibilities  hereunder or in the  secretarial  and  administrative  support
provided to Executive; or

                           (E) a failure  by the  Company or any  subsidiary  or
affiliate  of the Company to comply with any other  material  term or  provision
hereof or of any other written  agreement  between  Executive and the Company or
any such subsidiary or affiliate.

                  For purposes of this Agreement, the termination of Executive's
employment  hereunder by Executive  because of the occurrence of any one or more
of the following  events within one (1) year following the  consummation  of the
Merger (as defined in that certain  Amended and Restated  Agreement  and Plan of
Merger, dated as of March 24, 1999, between Yankee Acquisition Corp., a Delaware
corporation,  and the Company), shall be deemed to have occurred for "Additional
Reason":

                           (A) the  removal of  Executive  from the  position of
General  Counsel and Secretary,  or a material  change in the nature or scope of
any  of  Executive's  authorities,   status,  powers,   functions,   duties,  or
responsibilities  that is generally an essential  function of such  position and
which is determined  by Executive in good faith to be adverse to those  existing
before such change;

                           (B) a  reduction  in  Executive's  Base Salary or any
other  failure  by the  Company  to comply  with  Section  3 hereof  that is not
consented to or approved by Executive;

                           (C) the relocation of Executive's  office at which he
is to perform his duties and responsibilities hereunder to a location outside of
the Dallas, Texas,  metropolitan area, or a materially adverse alteration in the
office   space   within   which   Executive   is  to  perform   his  duties  and
responsibilities  hereunder or in the  secretarial  and  administrative  support
provided to Executive; or


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                           (D) a failure  by the  Company or any  subsidiary  or
affiliate  of the Company to comply with any other  material  term or  provision
hereof or of any other written  agreement  between  Executive and the Company or
any such subsidiary or affiliate.

         6. COMPENSATION  UPON TERMINATION OR FAILURE TO RENEW.  Executive shall
be entitled to the following  compensation from the Company upon the termination
of his employment or upon the Company's delivery of notice pursuant to Section 1
that the Term of this Agreement  shall not following any anniversary of the date
hereof be automatically extended for an additional year.

                  (a) DEATH.  If Executive's  employment  shall be terminated by
reason of his death,  the  Company  shall pay to such  person as shall have been
designated in a notice filed with the Company prior to Executive's death, or, if
no such person shall be designated,  to his estate as a death benefit,  his Base
Salary to the date of his death in addition to any payments  Executive's spouse,
beneficiaries,  or estate may be entitled to receive  pursuant to any pension or
employee benefit plan or other  arrangement or life insurance policy  maintained
by the Company. In addition,  (x) the Company shall make payments of premiums to
continue the medical and dental  insurance  coverage of  Executive's  spouse and
children  under  age  twenty-five  (25) as in  effect  at and as of the  date of
Executive's  death (or to provide as similar  coverage as possible  for the same
premiums if the continuation of existing  coverage is not permitted) for one (1)
year  after  the date of  Executive's  death,  in each case to the  extent  such
coverage is available, and (y) the Company shall make a lump sum cash payment to
the appropriate  insurance  company(ies)  in an amount  sufficient to fully fund
future premium  payments  pursuant to Executive's  then existing  second-to-die,
split-dollar   insurance   policy(ies)   obtained  through  the  Company  and/or
OccuSystems, Inc.

                  (b)  DISABILITY.  During any period  that  Executive  fails to
perform his  material  managerial  duties and  responsibilities  hereunder  as a
result of incapacity due to physical or mental illness, Executive shall continue
to receive his Base Salary and any bonus payments until  Executive's  employment
is terminated pursuant to Section 5(b) hereof or until Executive  terminates his
employment  pursuant to Section  5(d)(2) hereof,  whichever first occurs.  After
such termination, the Company shall pay to Executive, on or before the fifth day
following the Date of Termination  (as  hereinafter  defined) his Base Salary to
the Date of  Termination.  In addition,  (x) the Company  shall make payments of
premiums as necessary to cause  Executive  and  Executive's  spouse and children
under age  twenty-five  (25) to continue to be covered by the medical and dental
insurance  as in effect at and as of the Date of  Termination  (or to provide as
similar  coverage  as possible  for the same  premiums  if the  continuation  of
existing  coverage  is not  permitted)  for  one  (1)  year  after  the  Date of
Termination,  in each case to the extent such coverage is available, and (y) the
Company  shall  make a lump  sum  cash  payment  to  the  appropriate  insurance
company(ies)  in an amount  sufficient  to fully fund  future  premium  payments
pursuant to  Executive's  then existing  second-to-die,  split-dollar  insurance
policy(ies) obtained through the Company and/or OccuSystems, Inc.

                  (c) CAUSE. If Executive's  employment  shall be terminated for
Cause,  the Company  shall pay  Executive  his Base  Salary  through the Date of
Termination  at the rate in

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effect at the time Notice of  Termination  is given.  Such payments  shall fully
discharge the Company's obligations hereunder.

                  (d) BREACH BY THE COMPANY, FOR GOOD REASON, OR UPON FAILURE TO
RENEW.  If  (1) in  breach  of  this  Agreement,  the  Company  shall  terminate
Executive's  employment  (it being  understood  that a purported  termination of
Executive's  employment  by the  Company  pursuant  to  any  provision  of  this
Agreement that is disputed and finally  determined not to have been proper shall
be a termination by the Company in breach of this  Agreement),  or (2) Executive
shall  terminate his employment  for Good Reason,  or (3) the Company shall give
Executive  notice  pursuant  to Section 1 prior to any  anniversary  of the date
hereof that the Term of this Agreement shall not be  automatically  extended for
an  additional  year on any such  anniversary  date,  then the Company shall pay
Executive:

                           (A) his Base Salary  through the Date of  Termination
at the rate in effect at the time Notice of Termination is given;

                           (B)  in  lieu  of  any  further  salary  payments  to
Executive for periods subsequent to
the Date of Termination,  the Company shall pay as severance pay to Executive on
or before the fifth day following the Date of  Termination  and on the fifth day
of each of the eleven (11)  months  thereafter  (amounting  to a total of twelve
(12) months),  an amount in cash equal one-twelfth  (1/12) of Executive's annual
Base  Salary  at the rate in effect at the time the  Notice  of  Termination  is
given; and

                           (C) all  benefits  payable  under  the  terms  of any
employee benefit plan or other arrangement as of the Date of Termination.

                  In addition,  (x) the Company  shall make payments of premiums
as necessary to cause  Executive and  Executive's  spouse and children under age
twenty-five  (25) to continue to be covered by the medical and dental  insurance
as in effect at and as of the Date of  Termination  (or to  provide  as  similar
coverage  as possible  for the same  premiums  if the  continuation  of existing
coverage is not  permitted) for one (1) year after the Date of  Termination,  in
each case to the extent such  coverage is  available,  and (y) the Company shall
make a lump sum cash payment to the  appropriate  insurance  company(ies)  in an
amount  sufficient to fully fund future premium payments pursuant to Executive's
then existing second-to-die, split-dollar insurance policy(ies) obtained through
the Company and/or OccuSystems, Inc.

                  (e)  MITIGATION.  Executive  shall not be required to mitigate
the  amount of any  payment  provided  for in this  Section 6 by  seeking  other
employment  or  otherwise;  PROVIDED,  HOWEVER,  that,  anything  herein  to the
contrary  notwithstanding,  in the  event  of  the  termination  of  Executive's
employment  prior to a Change in Control  (as defined in the  Concentra  Managed
Care,  Inc., 1997 Long-Term  Incentive Plan) which occurs after the consummation
of the Merger (as defined in that  certain  Amended and Restated  Agreement  and
Plan of Merger,  dated as of March 24, 1999, by and between  Yankee  Acquisition
Corp.,  a  Delaware  corporation,  and  the  Company)  (but  not if  Executive's
employment terminates after such a Change in Control), the amount of any payment
pursuant to Section  6(d)(B) and/or  pursuant to the first  paragraph of


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Section  6(f) shall be reduced by any  compensation  earned by  Executive as the
result of  employment  by another  employer  (whether  as a  director,  officer,
employee,  manager,  owner,  consultant,   independent  contractor,  advisor  or
otherwise)  after  the Date of  Termination  until the end of the  twelve  month
period of clause (B) of Section 6(d) above.

                  (f)  ADDITIONAL  REASON.  If  Executive  shall  terminate  his
employment for Additional Reason, as well as for Good Reason,  then, in addition
to and not in lieu of any other  amounts  payable by the  Company  to  Executive
whether  pursuant to Section  6(d) or otherwise  (it being the  intention of the
parties  that,  upon  the  occurrence  of an event or  events  described  in the
definition or "Good Reason" and "Additional  Reason" in Section 5(d),  Executive
may terminate this Agreement for Good Reason AND for  Additional  Reason),  then
the Company shall pay Executive as  additional  severance  pay, on or before the
fifth  day  following  the  Date of  Termination,  a lump  sum in cash  equal to
Executive's full annual Base Salary at the rate in effect at the time the Notice
of  Termination is given (for a total of two (2) times  Executive's  full annual
Base Salary when combined with amounts payable pursuant to Section 6(d)(B)).

                  In addition,  the Company  shall make  payments of premiums as
necessary to cause  Executive  and  Executive's  spouse and  children  under age
twenty-five  (25) to continue to be covered by the medical and dental  insurance
as in effect at and as of the Date of  Termination  (or to  provide  as  similar
coverage  as possible  for the same  premiums  if the  continuation  of existing
coverage  is not  permitted)  for one (1) year in  addition  to the one (1) year
provided for under Section 6(d) (for a total of two (2) years) after the Date of
Termination, in each case to the extent such coverage is available.

         7.       OTHER PROVISIONS RELATING TO TERMINATION.

                  (a) NOTICE OF  TERMINATION.  Any  termination  of  Executive's
employment by the Company or by Executive (other than termination because of the
death of Executive)  shall be  communicated  by written Notice of Termination to
the  other  party  hereto.  For  purposes  of  this  Agreement,   a  "Notice  of
Termination"  shall mean a notice which shall indicate the specific  termination
provision in this Agreement relied upon and shall set forth in reasonable detail
the facts and  circumstances  claimed  to  provide  a basis for  termination  of
Executive's employment under the provision so indicated.

                  (b) DATE OF TERMINATION. For purposes of this Agreement, "Date
of Termination"  shall mean: (1) if Executive's  employment is terminated by his
death,  the date of his  death;  (2) if  Executive's  employment  is  terminated
because of a disability  pursuant to Section  5(b),  then thirty (30) days after
Notice of Termination is given  (provided that Executive shall not have returned
to the  performance  of his duties on a full-time  basis during such thirty (30)
day period);  (3) if  Executive's  employment  is  terminated by the Company for
Cause or by  Executive  for Good  Reason  and/or for  Additional  Reason,  then,
subject  to  Sections  7(c)  and  7(d),  the date  specified  in the  Notice  of
Termination;  (4) if the Company gives  Executive  notice  pursuant to Section 1
prior to any  anniversary  of the date  hereof  that the Term of this  Agreement
shall  not  be  automatically  extended  for an  additional  year  on  any  such
anniversary  date, the date upon which


                                       9


the Term expires; and (5) if Executive's  employment is terminated for any other
reason, the date on which a Notice of Termination is given.

                  (c) GOOD REASON AND/OR ADDITIONAL REASON.  Upon the occurrence
of an event  described  in clauses (A) through  (E) of the  definition  of "Good
Reason" in Section 5(d),  and/or upon the  occurrence  of an event  described in
clauses (A)  through (D) of the  definition  of  "Additional  Reason" in Section
5(d),  Executive may terminate his  employment  hereunder for Good Reason and/or
Additional  Reason,  as  applicable,   within  one  hundred  eighty  (180)  days
thereafter by giving a Notice of Termination  to the Company to that effect.  If
the effect of the  occurrence  of the event  giving rise to Good  Reason  and/or
Additional  Reason under  Section 5(d) may be cured,  the Company shall have the
opportunity  to cure any such effect for a period of thirty (30) days  following
receipt of Executive's  Notice of Termination.  If the Company fails to cure any
such effect,  the  termination  for Good Reason and/or  Additional  Reason shall
become effective on the date specified in Executive's Notice of Termination.  If
Executive  does not give such Notice of  Termination  to the Company,  then this
Agreement  will  remain  in  effect;  PROVIDED,  HOWEVER,  that the  failure  of
Executive to terminate this Agreement for Good Reason and/or  Additional  Reason
shall not be deemed a waiver of  Executive's  right to terminate his  employment
for Good Reason  and/or  Additional  Reason upon the  occurrence of a subsequent
event described in Section 5(d) in accordance with the terms of this Agreement.

                  (d) CAUSE.  In the case of any  termination  of Executive  for
Cause,  the Company will give  Executive a Notice of  Termination  describing in
reasonable  detail,  the  facts  or  circumstances  giving  rise to  Executive's
termination  (and,  if  applicable,  the action  required to cure same) and will
permit  Executive  thirty  (30) days to cure such  failure to comply or perform.
Cause  for  Executive's  termination  will  not be  deemed  to exist  until  the
expiration of the foregoing cure period,  so long as Executive  continues to use
his best efforts  during the cure period to cure such failure.  If within thirty
(30) days following  Executive's  receipt of a Notice of Termination  for Cause,
Executive has not cured the facts or  circumstances  giving rise to  Executive's
termination for Cause, then Executive's termination for Cause shall be effective
as of the date specified in the Notice of Termination.

                  (e) INTEREST.  Until paid, all past due amounts required to be
paid by the Company under any provision of this Agreement shall bear interest at
the highest  non-usurious rate permitted by applicable federal,  state, or local
law.

         8.       SUCCESSORS; BINDING AGREEMENT.

                  (a)  SUCCESSORS.  This  Agreement  shall be binding upon,  and
inure  to  the  benefit  of,  the  Company,   Executive,  and  their  respective
successors,   assigns,   personal   and   legal   representatives,    executors,
administrators, heirs, distributees, devisees, and legatees, as applicable.

                  (b)  ASSUMPTION.   The  Company  will  require  any  successor
(whether direct or indirect, by purchase of securities,  merger,  consolidation,
sale of assets,  or  otherwise) to all or  substantially  all of the business or
assets  of the  Company,  by an  agreement  in  form  and  substance


                                       10


reasonably  satisfactory to Executive, to expressly assume this Agreement and to
agree to perform  this  Agreement in the same manner and to the same extent that
the  Company  would be required  to perform it if no such  succession  had taken
place.   Failure  of  the  Company  to  obtain  such  agreement   prior  to  the
effectiveness  of any such  succession  shall be a breach of this  Agreement and
shall entitle  Executive to compensation from the Company in the same amount and
on the same terms as he would be  entitled to  hereunder  if he  terminated  his
employment for Good Reason (and, if such  succession  occurs on or before August
17,  2000,  in the same  amount and on the same terms as he would be entitled to
hereunder if he terminated his employment  for Additional  Reason),  except that
for  purposes  of  implementing  the  foregoing,  the  date on  which  any  such
succession becomes effective shall be deemed the Date of Termination.

                  (c)  CERTAIN  PAYMENTS.  If  Executive  should  die  while any
amounts would still be payable to him hereunder if he had continued to live, all
such amounts, unless otherwise provided herein, shall be paid in accordance with
the terms of this Agreement to Executive's  devisee,  legatee, or other designee
or, if there be no such designee, to Executive's estate.

         9. NOTICE.  For purposes of this  Agreement,  all notices and all other
communications  provided for in this Agreement  shall be in writing and shall be
deemed  to have been  duly  given  when (a)  delivered  personally,  (b) sent by
facsimile or similar electronic device and confirmed, (c) delivered by overnight
express, or (d) if sent by any other means, upon receipt.  Notices and all other
communications provided for in this Agreement shall be addressed as follows:

                  If to Executive:

                                            Richard A. Parr II
                                            5224 Beckington Lane
                                            Dallas, Texas  75287

                  If to the Company:

                                            Concentra Managed Care, Inc.
                                            312 Union Wharf
                                            Boston, Massachusetts 02109
                                            Fax No.: (617) 367-8519
                                            Attention:  Chief Executive Officer

                  With a copy to:

                                            Concentra Managed Care, Inc.
                                            5080 Spectrum Drive
                                            Suite 400, West Tower
                                            Addison, Texas  75001
                                            Fax No.:  (972) 387-1938
                                            Attention:  General Counsel


                                       11




or to such other  address  as either  party may have  furnished  to the other in
writing in accordance herewith.

         10.  MISCELLANEOUS.  No  provision of this  Agreement  may be modified,
waived, or discharged unless such waiver,  modification,  or discharge is agreed
to in a written  instrument  signed by Executive  and the Company.  No waiver by
either party hereto of, or compliance  with,  any condition or provision of this
Agreement  to be  performed  by such  other  party  shall be  deemed a waiver of
similar or  dissimilar  provisions  or conditions at the same or at any prior or
subsequent time. No agreements or representations, oral or otherwise, express or
implied,  with  respect to the  subject  matter  hereof have been made by either
party  which  are not set  forth  expressly  in this  Agreement.  The  validity,
interpretation,  construction,  and  performance  of  this  Agreement  shall  be
governed  by the laws of the  State of  Delaware,  excluding  any  choice-of-law
provisions thereof.

         11.  ATTORNEY  FEES.  All legal fees and costs incurred by Executive in
connection  with  the  resolution  of any  dispute  or  controversy  under or in
connection  with this Agreement  shall be reimbursed by the Company to Executive
as bills for such  services are  presented  by Executive to the Company,  unless
such dispute or  controversy  is found to have been brought not in good faith or
without merit by a court of competent jurisdiction.

         12. VALIDITY.  The invalidity or  unenforceability  of any provision or
provisions of this Agreement shall not affect the validity or  enforceability of
any other  provision  of this  Agreement,  which shall  remain in full force and
effect.

         13.   COUNTERPARTS.   This   Agreement   may  be  executed  in  several
counterparts,  each of which shall be deemed to be an original, but all of which
together will constitute one and the same agreement.

         14. ENTIRE  AGREEMENT;  EFFECTIVENESS.  This  Agreement  shall be of no
force or effect unless and until the  consummation  of the Merger (as defined in
that certain  Amended and  Restated  Agreement  and Plan of Merger,  dated as of
March 24, 1999, by and between Yankee Acquisition Corp., a Delaware corporation,
and the Company,  as such agreement may be amended from time to time); upon such
consummation,  this Agreement shall be in full force and effect.  This Agreement
constitutes the entire agreement between the parties with respect to the subject
matter  hereof  and  supersedes  in all  respects  any and all prior  employment
agreements  and/or severance  protection  letters,  agreements,  or arrangements
between Executive,  on the one hand, and the Company or any other predecessor in
interest  thereto or any of their  respective  subsidiaries,  on the other hand,
which  prior  employment   agreements  and/or  severance   protection   letters,
agreements,  and  arrangements,  if any, are hereby  cancelled and of no further
force or effect.

         15. RIGHT AND OPTION OF COMPANY TO REPURCHASE  SHARES UPON  TERMINATION
OF EMPLOYMENT.

                  (a) In the event that,  prior to an initial public offering of
the Company's  equity  securities,  Executive's  employment  with the Company


                                       12


is terminated  for any reason,  the Company shall  thereupon  have the right and
option,  but not the  obligation,  to purchase from Executive all or any part of
the  shares of common  stock,  par value  $.01 per share,  of the  Company  (the
"Shares") held by Executive as of the date Executive's employment so ceases at a
purchase price equal to the greater of (1) Sixteen and 50/100  Dollars  ($16.50)
per Share, and (2) the fair market value (as hereinafter defined) of such Shares
as of the date Executive's employment so ceases.

                  (b) The Company may exercise the right and option  provided in
Section  15(a) above by giving  Executive a written  notice of such  election to
purchase  at any time  within  ninety  (90)  days  after  the  date  Executive's
employment  so ceases.  The closing for the  purchase by the Company of any such
Shares  pursuant to the provisions of said Section 15(a) shall take place at the
offices of the Company on the date specified in such written notice,  which date
shall be a  business  day not later  than  sixty  (60) days  after the date such
notice  is  given.  At such  closing,  Executive  will  deliver  or  cause to be
delivered  such Shares,  duly  endorsed  for  transfer,  against  payment of the
applicable  purchase  price  therefor.  Such purchase  price shall be payable to
Executive  in cash or other  immediately  available  funds.  To the  extent  the
Company  chooses not to exercise  such right and option under said Section 15(a)
to purchase any Shares,  such Shares shall  thereupon cease to be subject to the
provisions of this Section 15.

                  (c) For the purposes of this Agreement, "fair market value" of
a Share as of any date shall mean the value of such stock as  determined in good
faith by the Board of  Directors of the Company on a basis  consistent  with the
manner of  determining  the fair market value of the Company's  common stock for
purposes of offering the Company's common stock to equity investors.

         IN WITNESS WHEREOF,  the parties have executed this Agreement as of the
date and year first above written.

                                            COMPANY:

                                            CONCENTRA MANAGED CARE, INC.


                                            By: /s/ Daniel J. Thomas
                                               -----------------------------
                                            Name: Daniel J. Thomas
                                            Title: President


                                            EXECUTIVE:


                                            /S/ Richard A. Parr II
                                                --------------------------------
                                                Richard A. Parr II

                                       13