AMENDMENT TO EMPLOYMENT AGREEMENT


         THIS  AMENDMENT TO EMPLOYMENT  AGREEMENT (the  "Amendment")  is entered
into  effective  as of October 13,  1998,  by and between  MARTIN M. KOFFEL (the
"Employee") and URS CORPORATION, a Delaware corporation (the "Company").

                                    RECITALS

         A. The Company and the Employee have  executed that certain  Employment
Agreement dated as of December 16, 1991 (the "Original Agreement").

         B. In  consideration  of the  premises,  and  other  good and  valuable
consideration,  receipt  of which is hereby  acknowledged  by the  parties,  the
Company and the  Employee  desire to amend the  Original  Agreement as specified
herein.

                                    AGREEMENT

         The Company and the Employee,  intending to be legally bound,  agree as
follows:

     1.  AMENDMENT.

         (a) Amendment of Section 4(d).  Section 4(d) of the Original  Agreement
is hereby amended to read in its entirety as follows:

                           "(d)  Life   Insurance.   During   the  term  of  the
                  Employee's employment under this Agreement,  the Company shall
                  pay  to  the   Employee   an  amount   (the  "Life   Insurance
                  Reimbursement  Payment")  sufficient to reimburse the Employee
                  for the cost as incurred of one or more  policies of term life
                  insurance on the life of the  Employee  with face amount death
                  benefits  in an  aggregate  amount  up to four  times his Base
                  Compensation,  together with an  additional  amount (the "Life
                  Insurance  Gross-Up  Payment")  such that after payment by the
                  Employee  of all  income  and  employment  taxes  on the  Life
                  Insurance   Reimbursement   Payment  and  the  Life  Insurance
                  Gross-Up Payment,  the Employee retains an amount equal to the
                  Life Insurance Reimbursement Payment."

         (b)  Amendment  of Section 8.  Section 8 of the  Original  Agreement is
hereby amended to read in its entirety as follows:

                           "8.  Certain  Additional  Payments.  If any payments,
                  distributions  or other  benefits by or from the Company to or
                  for the benefit of the  Employee  (whether  paid or payable or
                  distributed  or  distributable  pursuant  to the terms of this
                  Agreement or otherwise,  but determined  without regard to any
                  additional    payment   required   under   this   Section   8)
                  (collectively,  the "Payment")  would be subject to the excise
                  tax imposed by Section  4999 of the  Internal  Revenue Code or
                  any  interest or penalties  are incurred by the Employee  with
                  respect to such excise tax (such excise tax, together with any
                  such  interest and  penalties,  are  hereinafter  collectively
                  referred to as the "Excise  Tax"),  then the Employee shall be
                  entitled 





                  to receive from the Company an additional payment (a "Gross-Up
                  Payment") in an amount such that after payment by the Employee
                  of all taxes (including,  without  limitation,  any income and
                  employment  taxes and any interest and penalties  imposed with
                  respect  thereto) and the Excise Tax imposed upon the Gross-Up
                  Payment,  the  Employee  retains  an  amount  of the  Gross-Up
                  Payment equal to the Excise Tax imposed upon the Payment.  All
                  calculations  required by this Section 8 shall be performed by
                  the independent auditors retained by the Company most recently
                  prior to the  Change in  Control  (the  "Auditors"),  based on
                  information supplied by the Company and the Employee. All fees
                  and expenses of the Auditors shall be paid by the Company."

     2.   MISCELLANEOUS PROVISIONS.

         (a)  Original  Agreement.  The Original  Agreement,  as amended by this
Amendment, shall continue in full force and effect after the date hereof.

         (b) Whole Agreement.  No agreements,  representations or understandings
(whether oral or written and whether express or implied) which are not expressly
set forth in the Original  Agreement,  as amended by this  Amendment,  have been
made or entered into by either party with respect to the subject  matter of this
Amendment.

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

                        "Company"

                        URS CORPORATION


                        By:  /s/ Kent P. Ainsworth                  
                            ----------------------------------------------------
                                 KENT P. AINSWORTH
                                 Title:   Executive  Vice President and Chief
                                          Financial Officer

                        "Employee"



                        /s/Martin M. Koffel           
                        --------------------------------------------------------
                        MARTIN M. KOFFEL