Exhibit 10.11

                                  AMENDMENT TO
                              EMPLOYMENT AGREEMENT

     This Amendment to Employment Agreement,  dated as of April 30, 1998, by and
between   Pharmaceutical   Resources,   Inc.,  a  New  Jersey  corporation  (the
"Company"), Par Pharmaceutical,  Inc., a New Jersey corporation and wholly-owned
subsidiary of the Company ("Par"),  and Kenneth I. Sawyer  ("Executive")  amends
the Employment  Agreement,  dated as of October 4, 1992, as amended from time to
time (the "Employment  Agreement"),  between the Company, Par and Executive. All
capitalized  terms used herein and not otherwise  defined  herein shall have the
meanings ascribed to them in the Employment Agreement.

     WHEREAS, the Company and Lipha Americas,  Inc., a Delaware corporation (the
"Purchaser"),  have entered into a Stock Purchase Agreement (the "Stock Purchase
Agreement"),  dated  March 25,  1998,  providing,  among other  things,  for the
Purchaser  and its  affiliates  to acquire  over 38% of the common  stock of the
Company;

     WHEREAS,  Executive has the right to terminate the Employment Agreement for
Employer's  material breach as a result of the transactions  contemplated by the
Stock Purchase Agreement;

     WHEREAS,  the Stock  Purchase  Agreement  requires  that, as a condition to
closing,  that Executive must (i) waive such breach of the Employment  Agreement
and  agree to  continue  his  employment  with the  Company,  (ii)  agree to the
appointment of a new President and Chief Operating Officer of the Company and/or
any of its subsidiaries designated by the Purchaser and relinquish his title and
position as President of the Company and/or its  subsidiaries  in the event that
the Purchaser elects to make such  designation,  (iii) vote his shares of common
stock of the  Company  in favor of the  transactions  contemplated  by the Stock
Purchase Agreement, and (iv) agree not to exercise his unexercised stock options
previously  granted for a period of three years and ten  business  days from the
date  of  closing  of  the  transactions  contemplated  by  the  Stock  Purchase
Agreement,  notwithstanding  that  otherwise  they would  have been  exercisable
during this period;

     WHEREAS,  Executive owes the Company the principal  amount of  $343,057.38,
plus interest,  under  Executive's  promissory  note, dated August 14, 1997 (the
"Note"); and

     WHEREAS, in consideration of the foregoing agreements and waivers requested
from  Executive,  the Company  has agreed to forgive the Note over a  three-year
period.

     NOW  THEREFORE,  in  consideration  of  the  premises  and  of  the  mutual
agreements  set forth  herein,  the  Employment  Agreement is hereby  amended as
follows:




     1. Title.  Executive agrees that,  effective upon the election by the Board
of Directors of the Company of a designee of the  Purchaser as the President and
Chief Operating  Officer of the Company and/or any of its  subsidiaries  and any
such designee duly holding such offices,  the Company shall employ  Executive in
the  capacities  of  Chairman  of the Board and Chief  Executive  Officer of the
Company and each of its  subsidiaries  and  Executive  shall no longer be, or be
entitled or required under the Employment  Agreement to be, the President of the
Company and/or any of its  subsidiaries  to the extent that the Purchaser  shall
have so designated.

     2.  Voting.  Executive  hereby  agrees to vote all of the  shares of Common
Stock of the Company owned by him or which he otherwise has the power to vote in
favor of each of the  Proposals  (as defined in the Stock  Purchase  Agreement),
including approval of all Nominees (as defined in the Stock Purchase Agreement).

     3.  Stock  Options.  Executive  hereby  agrees not to  exercise  any of the
unexercised  stock  options  owned by him for a period  of  three  years  and 10
business days from the date of closing of the Stock Purchase  Agreement  without
the prior written consent of the Purchaser, subject to the Closing (as such term
is defined in the Stock Purchase Agreement).  Such agreement shall be more fully
set forth in a stock option  agreement to be executed and delivered by Executive
and the Company.

     4.  Consent  and Waiver.  Executive  hereby  consents  to the  transactions
contemplated  by the Stock  Purchase  Agreement,  including  but not  limited to
Sections 7.9 and 7.10 thereof,  and agrees that such  transactions  shall not be
deemed to  constitute  or cause a breach,  violation  or default by the  Company
under the Employment  Agreement.  Notwithstanding any thing contained in Section
3.2.6 of the Employment Agreement applicable to the transactions contemplated by
the Stock Purchase Agreement,  Executive hereby irrevocably waives his rights to
terminate the Agreement under Section 3.2.6 of the Employment Agreement,  solely
with respect to the transactions contemplated by the Stock Purchase Agreement.

     5. Note  Forgiveness.  Commencing  on April 30,  1998,  the  Company  shall
forgive  the  payment  of the  Note at the  rate of  one-third  of the  original
principal  amount  each year (plus  accrued  interest  on the  forgiven  portion
thereof),  prorated for each month of Executive's employment,  as more fully set
forth in an amended and restated promissory note to be executed and delivered by
Executive and the Company in the form attached as Exhibit A hereto.

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     6.  Effect  of  Termination  on  Note  Forgiveness.  The  entire  remaining
principal balance of the Note, if any, including accrued interest thereon, shall
be forgiven and canceled,  without  further  action by any party,  and Executive
shall have no further  liability  to any party with  respect  thereto  effective
immediately  upon  (i) a  termination  of  Executive's  employment  prior to the
expiration  of  Executive's  term of  employment,  by Executive  for  Employer's
Material  Breach,  or by the Company  without Cause,  (ii) in the event that the
Company or Executive elects not to extend  Executive's  term of employment,  the
last day of  Executive's  term of  employment,  or (iii) the  termination of the
Employment Agreement by the Company or Par, whether by rejection, pursuant to 11
U.S.C.  Section 365, or similar  proceedings.  In the event of a termination  of
Executive's  employment for any other reason, the remaining principal balance of
the  Note,  including  incurred  interest  thereon,  which  shall  not have been
forgiven through the date of termination of Executive's  employment shall remain
outstanding and shall be repaid by Executive according to the terms of the Note.

     7. Governing Law. This Amendment to Employment  Agreement shall be governed
by and construed in accordance with the internal laws of the State of New York.

     8. Continued Effect.  Except as modified hereby,  the Employment  Agreement
remains in full force and effect.

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     IN  WITNESS  WHEREOF,  this  Amendment  to  Employment  Agreement  has been
executed and delivered by the parties hereto as of the date first above written.


                                           PHARMACEUTICAL RESOURCES, INC.


                                           By:    /s/ Dennis O'Connor
                                              ----------------------------------
                                              Name: Dennis O'Connor
                                              Title: Vice President & Chief
                                                     Financial Officer


                                           PAR PHARMACEUTICAL, INC.


                                           By:    /s/ Dennis O'Connor
                                              ----------------------------------
                                              Name: Dennis O'Connor
                                              Title: Vice President & Chief
                                                     Financial Officer



                                           /s/ Kenneth I. Sawyer
                                           -------------------------------------
                                               Kenneth I. Sawyer








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