EMPLOYMENT AGREEMENT


         THIS EMPLOYMENT AGREEMENT  ("Agreement") is entered into as of November
1, 1997 by and  between  JEAN-YVES  PEREZ (the  "Employee")  and  WOODWARD-CLYDE
GROUP, INC., a Delaware corporation (the "Company").

     1.           TERM OF EMPLOYMENT.

         (a) Basic Rule.  The  Company  agrees to employ the  Employee,  and the
Employee agrees to remain in employment  with the Company,  from the date hereof
until the date when the Employee's  employment terminates pursuant to Subsection
(b), (c), (d), (e) or (f) below.

         (b) Termination by Company Not for Cause. The Company may terminate the
Employee's  employment at any time without Cause (as defined  below) and for any
reason or no reason whatsoever by giving the Employee notice in writing.

         (c)  Termination  by Company for Cause.  The Company may  terminate the
Employee's  employment for Cause by giving the Employee  notice in writing.  For
all purposes under this Agreement, "Cause" shall mean:

                  (i) A  substantial  failure or  omission  of the  Employee  to
perform  his duties  hereunder,  other than as a result of death of  Employee or
Disability of Employee (as defined below).

                  (ii) An act by the Employee  involving  material injury to the
Company  or  to  URS  Corporation  (or  any  parent,  subsidiary  or  affiliated
corporation or related entity of either of them),  willful or gross  misconduct,
fraud or dishonesty;

                  (iii) The Employee's conviction of, or plea of "guilty" or "no
contest" to, a felony; or

                  (iv) The Employee's  disobedience  of orders and directives of
the Chief  Executive  Officer of URS  Corporation or his designee (as determined
under Section 2(a)).

         (d) Resignation by Employee.  The Employee may terminate his employment
by giving the Company notice in writing.

         (e)  Death of  Employee.  The  Employee's  employment  shall  terminate
automatically in the event of his death.

         (f) Disability. The Company may terminate the Employee's employment due
to Disability.  For all purposes under this Agreement,  "Disability"  shall mean
either:

                  (i) Employee has qualified for long-term  disability  benefits
under a plan,  program or  arrangement  maintained  by the  Company or a parent,
subsidiary or affiliated 

                                       1.

corporation or related entity of the Company; or

                  (ii) The  inability  of the  Employee  to  perform  the normal
duties of his  position  under  this  Agreement  for a  continuous  period of 60
calendar days or any incapacity, however caused, that, in the good faith opinion
of the Chief Executive Officer of URS Corporation or his designee,  is likely to
prevent Employee from performing his normal duties under this Agreement for more
than 90  calendar  days in any twelve  consecutive  month  period  (taking  into
account,  in the case of such an inability or incapacity  which is a physical or
mental  impairment  that  substantially  limits  one or more of the  major  life
activities of Employee, reasonable accommodations that would not impose an undue
hardship on the  Company,  as the terms  "reasonable  accommodation"  and "undue
hardship"  are  defined  in the  Americans  With  Disabilities  Act of 1990,  as
amended).

         (g) Rights Upon Termination. Except as expressly provided in Sections 6
and 7,  upon the  termination  of the  Employee's  employment  pursuant  to this
Section 1, the Employee shall only be entitled to the compensation, benefits and
reimbursements  described  in Sections 3, 4 and 5 for the period  preceding  the
effective date of the termination.  Neither the preceding sentence nor any other
provisions  of this  Agreement  shall be  construed  to give rise to any  right,
entitlement  or vesting as to any  compensation  or benefit  under any  employee
benefit  plan or program  referred  to in Section 4 that has not been paid as of
the  time  of  employment  termination.  By way  of  example  and  not by way of
limitation,  except as may be  specifically  required by the  written  terms and
conditions thereof without regard to this Agreement, Employee shall not have any
right to,  shall  not be vested  in,  and shall not be  entitled  to any full or
partial incentive or bonus compensation or any other amount whatsoever under any
nonqualified  management  incentive or bonus compensation plan or arrangement if
Employee's  employment  shall have  terminated  before amounts are actually paid
thereunder,  whether for the period under such plan or arrangement  during which
Employee's  employment  ceases or any other  period.  The  payments  under  this
Agreement  shall  fully  discharge  all  responsibilities  of the Company to the
Employee.

         (h)  Employment by Affiliate.  The employment of the Employee shall not
be considered to have  terminated  employment  for purposes of this Agreement if
the Employee is employed by a parent,  subsidiary or affiliated  corporation  or
related entity of the Company.

         (i)  Termination of Agreement.  This Agreement shall terminate when all
obligations of the parties hereunder have been satisfied.

     2.           DUTIES AND SCOPE OF EMPLOYMENT.

         (a) Position. The Company agrees to employ the Employee in an executive
position for the term of his employment under this Agreement. The Employee shall
report as directed by the Chief  Executive  Officer of URS  Corporation  or such
officers  and agents of the Company or its  parent,  subsidiary  and  affiliated
corporations and related entities as such Chief Executive Officer may direct and
shall serve in such positions on behalf of the Company and such corporations and
entities and perform such duties consistent with an executive position at 

                                       2.


such locations as may be required by such Chief  Executive  officer or designee.
It is  anticipated  that  the  Employee's  duties  will  require  him to  travel
frequently and  extensively.  The Employee's  principal  office (greater Denver,
Colorado  area)  may be  changed  from  time to time  with the  approval  of the
Employee,  provided the Company  reimburses  reasonable  relocation  expenses of
Employee in accordance with generally applicable policies of the Company.

         (b)  Obligations.   During  the  term  of  his  employment  under  this
Agreement,  the Employee shall devote his full business  efforts and time to the
Company and its parent,  subsidiaries  and affiliated  corporations  and related
entities and shall not render services to any other person or entity without the
prior written consent of the Chief  Executive  Officer of URS  Corporation.  The
foregoing, however, shall not preclude the Employee from engaging in appropriate
civic, charitable or religious activities.

         (c) Other  Agreements.  Employee  shall from time to time  execute  and
deliver to Company and its parent,  subsidiary and affiliated  corporations  and
related entities such  agreements,  documents and instruments as the Company may
reasonably  require,  including,  without  limitation,   confidentiality,  trade
secret, invention assignment and other agreements.

         (d) Resignation from Other  Positions.  Immediately upon request by the
Company, before or after the termination of the employment of Employee, he shall
resign from any position he holds as director,  officer, trustee, nominee, agent
for service of process, attorney-in-fact or similar position with respect to the
Company or a parent,  subsidiary or affiliated  corporation or related entity of
the Company, and shall execute,  verify,  acknowledge,  swear to and deliver any
documents  and  instruments  reasonably  requested by the Company or required to
reflect such resignation.

     3.           BASE COMPENSATION.

                  During the term of his employment  under this  Agreement,  the
Company  agrees to pay the  Employee  as  compensation  for his  services a base
salary at an annual rate of no less than $310,000.  Such salary shall be payable
in  accordance  with the  Company's  standard  payroll  procedures.  (The annual
compensation  specified in this Section 3,  together  with any increases in such
compensation  that the  Company  may grant from time to time,  is referred to in
this Agreement as "Base Compensation.")

         4.       EMPLOYMENT    BENEFITS,    STOCK   OPTIONS,    AND   INCENTIVE
                  COMPENSATION, AND OTHER COMPENSATION PLANS AND PROGRAMS.

         (a) Eligibility to Participate. During the term of his employment under
this  Agreement,  the Employee  shall be eligible to participate in the employee
benefit plans,  stock option and other  equity-based  incentive and compensation
plans, and other executive  incentive and compensation  programs maintained with
respect to employees of the Company,  subject in each case to (i) the  generally
applicable  terms and  conditions  of the plan or program in question and to the
determinations  of the Board of Directors of URS Corporation or any committee or
other person  administering  such plan or program,  (ii)  determinations  by the
Company, any such

                                       3.


corporation or entity, or any such board,  committee or person as to whether and
to what extent Employee shall so participate or cease to participate,  and (iii)
amendment,  modification  or termination of any such plan or program in the sole
and absolute  discretion of the Company or its parent,  subsidiary or affiliated
corporation or related entity maintaining such plan.

         (b) Incentive Compensation.  Subject to the provisions of Section 4(a),
Employee shall have a 50% Target Award Percentage under the Company's  Incentive
Compensation Plan if and to the extent in effect from time-to-time.

     5.           BUSINESS EXPENSES.

                  In  accordance   with  the  Company's   generally   applicable
policies,  (i)  during the term of his  employment  under  this  Agreement,  the
Employee  shall  be  authorized  to  incur  necessary  and  reasonable   travel,
entertainment  and  other  business  expenses  in  connection  with  his  duties
hereunder,  and (ii) the Company shall  reimburse the Employee for such expenses
upon   presentation   of  an  itemized   account  and   appropriate   supporting
documentation.

     6.           CHANGE IN CONTROL.

         (a)  Definition.  For all  purposes  under this  Agreement,  "Change in
Control"  shall mean that,  after the date of this  Agreement,  any "person" (as
such term is used in sections 13(d) and 14(d) of the Securities  Exchange Act of
1934, as amended),  other than a person that immediately  before the acquisition
or aggregation of securities  referred to immediately  hereinafter,  directly or
indirectly  controls,  is  controlled  by, or is under  common  control with URS
Corporation,  through the acquisition or aggregation of securities,  becomes the
beneficial  owner,  directly or indirectly,  of securities of URS Corporation or
the Company  representing 51 percent or more of the combined voting power of the
then  outstanding  securities  ordinarily  (and apart from rights accruing under
special  circumstances)  having the right to vote at elections of directors (the
"Base  Capital  Stock");  except  that any  change  in the  relative  beneficial
ownership of URS Corporation's  securities by any person resulting solely from a
reduction in the aggregate  number of outstanding  shares of Base Capital Stock,
and any decrease  thereafter in such person's ownership of securities,  shall be
disregarded  until such person increases in any manner,  directly or indirectly,
such person's beneficial ownership of any securities of URS Corporation.

         (b) Good Reason.  For all purposes under this Agreement,  "Good Reason"
shall mean that either (i) the  Employee  has  incurred a reduction  in his Base
Compensation or (ii) the Company has breached its obligations under Section 2(a)
and,  at the  time of such  breach,  the  Employee  is in  compliance  with  his
obligations thereunder and under the other provisions of this Agreement.

         (c) Change in Control  Payment.  If, during the term of this  Agreement
and within one year after the  occurrence of a Change in Control with respect to
URS Corporation, the Employee voluntarily resigns his employment for Good Reason
or the Company  terminates the  Employee's  employment for any reason other than
Cause or Disability,  then the Employee shall be entitled to receive a severance
payment from the Company (the "Change in Control

                                       4.


Payment") and in addition shall be entitled to Severance  Benefits in accordance
with  Subdivision  (ii) of Section 7(a).  No Change in Control  Payment shall be
made in case of  termination  of employment of Employee by reason of resignation
of  Employee  other  than  for Good  Reason,  death of  Employee,  or any  other
circumstance  not  specifically  and  expressly  described  in  the  immediately
preceding  sentence.  The Change in Control  Payment shall be made in a lump sum
not  more  than  five  business  days  following  the  date  of  the  employment
termination  and shall be in an amount  determined  under  Subsection (d) below;
provided,  however, in no event shall the Company be required to make the Change
in Control  Payment  unless and until  Employee  executes  and  delivers  to the
Company a  release  in the form of  Exhibit  A and  seven (7) days have  elapsed
following  such  execution  and delivery  without  revocation of such release by
Employee.  The Change in  Control  Payment  shall be in lieu of (i) any  further
payments to the Employee  under Section 3, (ii) any further  accrual of benefits
under  Sections 4 and 6 with  respect to periods  subsequent  to the date of the
employment  termination  and (iii) any  entitlement  to a Severance  Payment (as
defined in Subdivision (i) of Section 7(a) below).

         (d) Amount.  Subject to the  provisions of Sections 8(a) and 8(b),  the
amount of the  Change in Control  Payment  shall be equal to two  hundred  (200)
percent of the Employee's annual rate of Base Compensation,  as in effect on the
date of the employment termination.

     7.           INVOLUNTARY TERMINATION WITHOUT CAUSE.

         (a) Severance.  In the event that,  during the term of this  Agreement,
the Company terminates the Employee's employment for any reason other than Cause
or Disability or the Employee voluntarily resigns his employment for Good Reason
within  ten  (10)  weeks  of the  effective  date  of a  reduction  of his  Base
Compensation or the Company's  material breach of its obligations  under Section
2(a), as the case may be, and Section 6 does not apply, then:

                  (i) The Company shall pay an amount  ("Severance  Payment") in
installments (or a lump sum if the Company so elects),  as provided below, equal
in the  aggregate  to either one hundred  percent  (100%) or one  hundred-twenty
percent (120%) of Employee's  annual rate of Base  Compensation  as in effect on
the date of employment  termination  plus any accrued and unpaid vacation at the
time of such termination.  If the date of employment  termination  occurs in the
first half of the Company's fiscal year, the Severance  Payment shall be 100% of
Employee's  annual  rate of  Base  Compensation,  as in  effect  on the  date of
employment  termination.  If the date of  employment  termination  occurs in the
second half of the Company's fiscal year, the Severance Payment shall be 120% of
Employee's  annual  rate  of  Base  Compensation  as in  effect  on the  date of
employment  termination.  The Severance Payment shall be made in installments at
the same rate (or one hundred-twenty percent (120%) of the rate, as the case may
be) and in  accordance  with the same schedule as Base  Compensation  would have
been paid had employment  continued until the Severance Payment has been made in
full;  provided,  however,  at its  election the Company may at any time pay any
remainder of the Severance Payment in a lump sum.

                  (ii)  For  the   period  of  one  (1)  year   following   such
termination,  the Company  shall (i)  reimburse  Employee  for dental and health
insurance premiums required to be 

                                       5.


paid by  Employee  for such one (1) year  period  to obtain  COBRA  continuation
coverage within the meaning of Section 4980B(f) (2) of the Internal Revenue Code
of 1986, as amended (the "Code"),  provided  Employee  elects such  continuation
coverage, and (ii) cause group long-term disability insurance coverage and basic
term life  insurance  coverage with a death benefit as then provided to Employee
by the  Company,  if any, to be  continued  for such one (1) year period (or, if
such  coverage  cannot be  continued  or can only be  continued at a cost to the
Company  greater than the Company would have incurred  absent such  termination,
then, at the Company's  election,  the Company may either provide such long-term
disability  or term life  insurance  as may be available at no greater cost than
one hundred fifty percent (150%) of what the Company would have incurred  absent
such  termination  or pay to Employee one hundred  fifty  percent  (150%) of the
amount of premiums the Company  would have  incurred to continue  such  coverage
absent such  termination)  (payments and benefits under this  Subdivision  (ii),
collectively "Severance Benefits").

                  (iii) There shall be credited  toward payment and provision of
the Severance Payment and Severance Benefits any other payments or benefits paid
or  provided  to  Employee  by or on  behalf  of the  Company  or its  parent or
subsidiaries  as a result of any such  termination  of  employment  (other  than
payment of  vacation  accrued as of such  termination,  and  provided  that mere
acceleration  of  exercisability  of stock  options or of the time of payment or
provision  of other  payments  or  benefits  that are  payable or required to be
provided to Employee  without regard to  termination of employment  shall not be
considered  to result  from such  termination).  The  first  installment  of the
Severance  Payment  shall be made not later  than  thirty  (30) days  after such
termination,  and Severance  Benefits shall be provided monthly commencing after
the expiration of one (1) month following such termination;  provided,  however,
in no event  shall the  Company be  required  to make or provide  any  Severance
Payment or Severance  Benefit unless and until Employee executes and delivers to
the  Company a release in the form of Exhibit A and seven (7) days have  elapsed
following  such  execution  and delivery  without  revocation of such release by
Employee  (except  that  pending  either such  execution  and delivery of such a
release by  Employee  or failure of  Employee  to do so within  such thirty (30)
period,  the Company will advance for the account of Employee  premiums required
to be paid during such thirty (30) day period if  necessary  to avoid lapse with
respect to Employee  within such period of a group dental,  health or disability
policy to which  Severance  Benefits  relate,  which  advance shall be repaid by
Employee on expiration of such thirty (30) day period in case Employee  fails to
so execute and deliver such a release).

         (b) Termination of Severance Benefits.  All Severance Benefits shall be
discontinued  completely as of the date when the Employee  returns to employment
or self-employment,  whether full- or part-time,  with an entity that offers any
group insurance coverage to its employees or independent contractors, regardless
of whether such coverage is equivalent to the insurance coverage contemplated by
the Severance Benefits.

     8.           LIMITATION ON PAYMENTS.

         (a) Basic Rule. Any other provision of this Agreement  notwithstanding,
the Company shall not be required to make any payment to, or for the benefit of,
the Employee

                                       6.


(under this Agreement or otherwise) that would be  nondeductible  by the Company
by reason of section 280G of the Code or that would  subject the Employee to the
excise tax  described  in section  4999 of the Code,  and any payment or benefit
that would be nondeductible by reason of section 162(m) of the Code shall to the
extent be deferred  and paid or provided in the next taxable year when it can be
paid  or  provided  without  limitation  by  section  162(m)  of the  Code.  All
calculations  required by this Section 8 shall be  performed by the  independent
auditors  retained  by URS  Corporation  most  recently  prior to the  Change in
Control (the "Auditors"),  based on information  supplied by the Company and the
Employee,  and shall be binding on the  Company and the  Employee.  All fees and
expenses of the Auditors shall be paid by the Company.

          (b)  Reductions.  If the  amount  of  the  aggregate  payments  to the
Employee must be reduced under this Section 8, then the Employee shall direct in
which order the payments  are to be reduced,  but no change in the timing of any
payment shall be made without the  Company's  consent  except as provided  above
with respect to the  limitation  of section  162(m) of the Code.  As a result of
uncertainty in the application of sections 162(m),  280G and 4999 of the Code at
the time of an initial  determination by the Auditors hereunder,  it is possible
that a payment will have been made by the Company that should not have been made
(an "Overpayment") or that an additional payment that will not have been made by
the  Company  could  have been made (an  "Underpayment").  In the event that the
Auditors,  based upon the  assertion  of a deficiency  by the  Internal  Revenue
Service against the Company or the Employee that the Auditors believe has a high
probability  of  success,  determine  that an  Overpayment  has been made,  such
Overpayment  shall be treated for all purposes as a loan to the Employee that he
shall repay to the Company,  together  with interest at the  applicable  federal
rate specified in section 7872(f) (2) of the Code;  provided,  however,  that no
amount shall be payable by the Employee to the Company if and to the extent that
such payment  would not reduce the amount that is  nondeductible  under  section
162(m) or 280G of the Code or is subject to an excise tax under  section 4999 of
the Code.  In the event that the Auditors  determine  that an  Underpayment  has
occurred, such Underpayment shall promptly be paid or transferred by the Company
to,  or for  the  benefit  of,  the  Employee,  together  with  interest  at the
applicable federal rate specified in section 7872(f)(2) of the Code.

     9.           NONDISCLOSURE.

                  During the term of this Agreement and thereafter, the Employee
shall not,  without the prior written consent of the Board,  disclose or use for
any purpose (except in the course of his employment  under this Agreement and in
furtherance  of  the  business  of  the  Company)  confidential  information  or
proprietary data of the Company or URS Corporation, or any parent, subsidiary or
affiliated  corporation or related entity of either of them,  except as required
by applicable law or legal process, in which case promptly and before disclosure
the  Employee  shall  give  notice to the  Company  of any such  requirement  or
process; provided,  however, that confidential information shall not include any
information  available from another  source on a  nonconfidential  basis,  known
generally to the public, or ascertainable  from public or published  information
(other  than as a  result  of  unauthorized  disclosure  by the  Employee).  The
Employee

                                       7.


agrees to deliver to the Company at the termination of his employment, or at any
other time the  Company may  request,  all  memoranda,  notes,  plans,  records,
reports and other documents (and copies thereof) relating to the business of the
Company and URS Corporation or any parent,  subsidiary or affiliated corporation
or related entity of either of them, which he may then possess or have under his
control.

     10.          MISCELLANEOUS PROVISIONS.

         (a)  Successors.  Subject to  Subsection  (i) below and  provided  that
Employee may not delegate his duties hereunder  without the consent of the Board
of Directors of the Company, this Agreement and all rights hereunder shall inure
to the benefit of, and be  enforceable  by, the  parties'  successors,  assigns,
personal   or   legal   representatives,   executors,   administrators,   heirs,
distributees, devisees and legatees.

         (b) Notice.  Notices and all other communications  contemplated by this
Agreement  shall be in writing  and shall be deemed to have been duly given when
personally  delivered or when mailed by U.S.  registered  mail,  return  receipt
requested and postage prepaid. In the case of the Employee, mailed notices shall
be addressed to him at the home address which he most recently  communicated  to
the Company in writing for income tax  withholding  purposes or by notice  given
pursuant to this  Subsection  (a). In the case of the  Company,  mailed  notices
shall be  addressed  to its  corporate  headquarters,  and all notices  shall be
directed to the  attention  of its  Secretary,  with a copy to URS  Corporation,
addressed to its corporate  headquarters  as reflected in its most recent Report
on  Form  10-Q or  Form  10-K  filed  with  the  U.S.  Securities  and  Exchange
Commission, directed to the attention of its Secretary.

         (c) Waiver. No provision of this Agreement shall be modified, waived or
discharged unless the modification,  waiver or discharge is agreed to in writing
and signed by the Employee and by an  authorized  officer of the Company  (other
than the Employee). No waiver by either party of any breach of, or of compliance
with,  any condition or provision of this  Agreement by the other party shall be
considered a waiver of any other condition or provision or of the same condition
or provision at another time.

         (d) Whole Agreement.  No agreements,  representations or understandings
(whether oral or written and whether express or implied) which are not expressly
set forth in this  Agreement have been made or entered into by either party with
respect to the subject  matter  hereof.  Effective as of the date  hereof,  this
Agreement  supersedes all prior employment  agreements and severance  agreements
between the parties,  their  parents,  subsidiaries  and  affiliates,  and their
respective predecessors.

         (e)  Withholding.  All  payments  made  under this  Agreement  shall be
subject to reduction to reflect taxes  required to be withheld by law.  Employee
hereby  declares  under  penalty of perjury that his Social  Security  Number is
###-##-####.  The Company  shall also be  entitled  to  withhold  from or offset
against any payments under this Agreement any amounts owed by Employee  (whether
or not liquidated) to the Company or URS  Corporation or any parent,  subsidiary
or affiliated corporation or related entity or either of them.

                                       8.





         (f)  Choice of Law.  The  validity,  interpretation,  construction  and
performance  of this  Agreement  shall be governed by the  internal  laws of the
State of  California,  without  regard to where  Employee  has his  residence or
principal office or where he performs his duties hereunder.

         (g) Severability.  The invalidity or  unenforceability of any provision
or provisions of this Agreement shall not affect the validity or  enforceability
of any other provision hereof, which shall remain in full force and effect.

         (h) Arbitration.  Except as otherwise provided in Section 6, and except
for any action by the Company seeking  injunctive relief against  Employee,  any
controversy or claim arising out of or relating to this Agreement, or the breach
thereof,  or Employee's  employment with the Company or the terms and conditions
or termination  thereof, or any action or omission of any kind whatsoever in the
course of or  connected  in any way with any  relations  between the Company and
Employee, shall be finally settled by binding arbitration in accordance with the
Commercial  Arbitration  Rules  of the  American  Arbitration  Association,  and
judgment  on the award  rendered by the  arbitrator  may be entered in any court
having  jurisdiction  thereof.  The arbitration shall be administered by the San
Francisco, California regional office of such Association and shall be conducted
at the San Francisco,  California  offices of such  Association or at such other
location in San Francisco,  California as such  Association  may designate.  All
fees and  expenses  of the  arbitrator  and such  Association  shall be borne as
designated by the arbitrator.

         (i) No  Assignment.  The rights of any person to  payments  or benefits
under this Agreement  shall not be made subject to option or assignment,  either
by  voluntary  or  involuntary  assignment  or by  operation  of law,  including
(without  limitation)  bankruptcy,  garnishment,  attachment or other creditor's
process, and any action in violation of this Subsection (i) shall be void.

         IN WITNESS WHEREOF, each of the parties has executed this Agreement, in
the case of the Company by its duly authorized  officer,  as of the day and year
first above written.

                                          /s/ Jean-Yves Perez
                                          -----------------------------------

                                          JEAN-YVES PEREZ

                                          Date: March 18, 1998
                                               -----------------------------

                                          WOODWARD-CLYDE GROUP, INC.

                                          /s/ Kent P. Ainsworth
                                          -----------------------------------

                                          KENT P. AINSWORTH, VICE PRESIDENT

                                          Date: March 16, 1998
                                                -----------------------------


                                       9.



                                    EXHIBIT A

                                 GENERAL RELEASE


         This General Release ("Release") is executed and delivered by Jean-Yves
Perez  ("Employee")  to and for  the  benefit  of URS  Corporation,  a  Delaware
corporation,  and any parent,  subsidiary or affiliated  corporation  or related
entity of URS Corporation,  including without limitation  Woodward-Clyde  Group,
Inc. and any parent,  subsidiary or affiliated  corporation or related entity of
Woodward-Clyde Group, Inc. (collectively, the "Company").

         In  consideration  of certain  benefits  which  Employee  will  receive
following  termination  of  employment  pursuant to the terms of the  Employment
Agreement  entered  into as of November 1, 1997  between  the  Employee  and the
Company  (the   "Agreement"),   the   sufficiency  of  which   Employee   hereby
acknowledges,  Employee hereby agrees not to sue and fully, finally,  completely
and generally  releases,  absolves and  discharges  Company,  its  predecessors,
successors,  subsidiaries,  parents,  related  companies and business  concerns,
affiliates,   partners,  trustees,   directors,   officers,  agents,  attorneys,
servants,  representatives  and  employees,  past and present,  and each of them
(hereinafter  collectively  referred to as "Releasees") from any and all claims,
demands,  liens,  agreements,  contracts,  covenants,  actions, suits, causes of
action, grievances, arbitrations, unfair labor practice charges, wages, vacation
payments,  severance  payments,  obligations,  commissions,  overtime  payments,
workers  compensation claims,  debts, profit sharing or bonus claims,  expenses,
damages, judgments, orders and/or liabilities of whatever kind or nature in law,
equity or  otherwise,  whether known or unknown to Employee  which  Employee now
owns or holds or has at any time owned or held as against  Releasees,  or any of
them  through the date  Employee  executes  this Release  ("Claims"),  including
specifically  but not  exclusively  and without  limiting the  generality of the
foregoing,  any  and  all  Claims  arising  out of or in any  way  connected  to
Employee's  employment with or separation of employment  from Company  including
any  Claims  based on  contract,  tort,  wrongful  discharge,  fraud,  breach of
fiduciary duty, attorneys' fees and costs, discrimination in employment, any and
all acts or omissions in  contravention of any federal or state laws or statutes
(including,  but not limited to, federal or state securities laws, any deceptive
trades  practices  act or any similar  act in any other state and the  Racketeer
Influenced  and Corrupt  Organizations  Act), and any right to recovery based on
state or federal age, sex,  pregnancy,  race,  color,  national origin,  marital
status,  religion,  veteran  status,  disability,  sexual  orientation,  medical
condition,  union  affiliation  or other  anti-discrimination  laws,  including,
without  limitation,  Title VII, the Age  Discrimination  in Employment Act, the
Americans  with   Disabilities  Act,  the  National  Labor  Relations  Act,  the
California Fair Employment and Housing Act, and any similar act in effect in any
jurisdiction applicable to Employee or the Company, all as amended, whether such
claim be based upon an action filed by Employee or by a governmental agency.

         During  the time  Employee  is  entitled  to any  Severance  Payment or
Severance  Benefits,  as  defined  and  provided  in  Sections  6 and  7 of  the
Agreement, Employee agrees (i) to assist, as reasonably requested by Company, in
the  transition  of  Employee's  responsibilities  and (ii) not to  solicit  any
employee of Company to terminate or cease employment with Company. Without

                                       1.


superseding  any other  agreements,  including the  Agreement,  and  obligations
Employee  has with  respect  thereto,  (i)  Employee  agrees not to divulge  any
information  that might be of a confidential  or proprietary  nature relative to
Company, and (ii) Employee agrees to keep confidential all information contained
in this  Release  (except  to the  extent  (A)  Company  consents  in writing to
disclosure,  (B) Employee is required by process of law to make such  disclosure
and Employee  promptly  notifies Company of receipt by Employee of such process,
or (C) such information  previously  shall have become publicly  available other
than by breach hereof on the part of Employee).

         Employee  acknowledges and agrees that neither anything in this Release
nor the offer, execution,  delivery, or acceptance thereof shall be construed as
an admission by Company of any kind, and this Release shall not be admissible as
evidence in any proceeding except to enforce this Release.

         It is the intention of Employee in executing  this  instrument  that it
shall be effective as a bar to each and every claim, demand, grievance and cause
of action  hereinabove  specified.  In furtherance of this  intention,  Employee
hereby expressly consents that this Release shall be given full force and effect
according to each and all of its express terms and  provisions,  including those
relating to unknown and  unsuspected  claims,  demands and causes of action,  if
any, as well as those relating to any other claims, demands and causes of action
hereinabove specified,  and elects to assume all risks for claims that now exist
in Employee's  favor,  known or unknown,  that are released  under this Release.
Employee  acknowledges  Employee may hereafter discover facts different from, or
in addition to, those  Employee now knows or believes to be true with respect to
the claims, demands, liens, agreements,  contracts,  covenants,  actions, suits,
causes of action,  wages,  obligations,  debts,  expenses,  damages,  judgments,
orders and liabilities  herein released,  and agrees the release herein shall be
and remain in effect in all respects as a complete and general release as to all
matters released herein, notwithstanding any such different or additional facts.

         If any  provision  of  this  Release  or  application  thereof  is held
invalid, the invalidity shall not affect other provisions or applications of the
Release which can be given effect without the invalid  provision or application.
To this end, the provisions of this Release are severable.

         Employee  represents  and warrants  that  Employee  has not  heretofore
assigned or transferred  or purported to assign or transfer to any person,  firm
or corporation any claim,  demand,  right,  damage,  liability,  debt,  account,
action, cause of action, or any other matter herein released.

                               NOTICE TO EMPLOYEE

         The law requires  that Employee be advised and Company  hereby  advises
Employee in writing to consult with an attorney and discuss this Release  before
executing it. Employee acknowledges Company has provided to Employee at least 21
calendar  days within which to review and consider this Release  before  signing
it.

                                       2.

         Should  Employee  decide  not to use the  full 21 days,  then  Employee
knowingly and voluntarily  waives any claims that Employee was not in fact given
that  period of time or did not use the entire 21 days to  consult  an  attorney
and/or  consider this Release.  Employee  acknowledges  that Employee may revoke
this Release for up to seven  calendar days  following  Employee's  execution of
this  Release and that it shall not become  effective or  enforceable  until the
revocation  period has expired.  Employee  further  acknowledges and agrees that
such   revocation   must  be  in  writing   addressed  to  Company  as  follows:
_____________________,  and received by Company as so  addressed  not later than
midnight on the seventh day following execution of this Release by Employee.  If
Employee  so  revokes  this  Release,  the  Release  shall not be  effective  or
enforceable  and  Employee  will not receive the monies and  benefits  described
above.  If  Employee  does not revoke this  Release in the time frame  specified
above,  the Release  shall become  effective at 12:00:01  A.M. on the eighth day
after it is signed by Employee.


                PLEASE READ CAREFULLY. THIS AGREEMENT CONTAINS A
                GENERAL RELEASE OF ALL KNOWN AND UNKNOWN CLAIMS.

         I have read and understood  the foregoing  General  Release,  have been
advised to and have had the  opportunity  to  discuss  it with  anyone I desire,
including  an attorney  of my own  choice,  and I accept and agree to its terms,
acknowledge  receipt of a copy of the same and the sufficiency of the monies and
benefits  described above, and hereby execute this Release  voluntarily and with
full understanding of its consequences.



Dated:_________________________           ______________________________________
                                                       Employee

                                       3.