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                                                                    EXHIBIT 10.1

                        PAREXEL INTERNATIONAL CORPORATION
                                 Amendment No. 4
                                       to
                   SECOND AMENDED AND RESTATED 1995 STOCK PLAN

The Second Amended and Restated 1995 Stock Plan (the "Plan") of PAREXEL
         International Corporation is hereby amended as follows (capitalized
         terms used herein and not defined herein shall have the respective
         meaning ascribed to such terms in the Plan):

Section 5 shall be amended and restated in its entirety to read as follows:

                  "5. MEANS OF EXERCISING STOCK RIGHTS. A Stock Right (or any
         part or installment thereof) shall be exercised by giving written
         notice to the Company at its principal office address. Such notice
         shall identify the Stock Right being exercised and specify the number
         of shares as to which such Stock Right is being exercised, accompanied
         by full payment of the purchase price therefor either (a) in United
         States dollars in cash or by check, (b) at the discretion of the
         Committee, through delivery of shares of Common Stock owned by the
         optionee free and clear of any restrictions (other than those arising
         under securities laws) for at least six months having a fair market
         value equal as of the date of the exercise to the cash exercise price
         of the Stock Right, (c) at the discretion of the Committee and
         consistent with applicable law, though the delivery of an assignment to
         the Company of a sufficient amount of the proceeds from the sale of the
         Common Stock acquired upon exercise of the Stock Right and an
         authorization to the broker or selling agent to pay that amount to the
         Company, which sale shall be at the participant's direction at the time
         of exercise, or (d) at the discretion of the Committee, by any
         combination of (a), (b) and (c) above. If the Committee exercises its
         discretion to permit payment of the exercise price of an ISO by means
         of the methods set forth in clauses (b), (c) or (d) of the preceding
         sentence, such discretion shall be exercised in writing at the time of
         the grant of the ISO in question.

                  A holder of a Stock Right who is a participant in a deferred
         compensation plan established by the Company may elect, with the
         permission of the Committee and in accordance with such rules as may be
         established by the Committee from time to time, to defer the receipt of
         any shares of Common Stock issuable upon the exercise of a Stock Right,
         provided that such election is irrevocable and that such election is
         made at least a specified number of days prior to the exercise of the
         Stock Right which number of days shall be determined by the Committee.
         The optionee's account under such deferred compensation

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         plan shall be credited with a number of shares of Common Stock equal to
         the number of shares so deferred.

                  The holder of a Stock Right shall not have the rights of a
         shareholder with respect to the shares covered by his Stock Right until
         the date of issuance a stock certificate to him for such shares. Except
         as expressly provided in paragraph 11 below with respect to changes in
         capitalization and stock dividends, no adjustment shall be made for
         dividends or similar rights for which the record date is before the
         date such stock certificate is issued. The stock certificates
         representing such shares shall carry such appropriate legend, and such
         written instructions shall be given to the Company's transfer agent, as
         may be deemed necessary or advisable by counsel to the Company in order
         to comply with the requirements of the Securities Act of 1933, as
         amended (the "Act") or any state securities laws."

Except as aforesaid, the Plan shall remain in full force and effect.<PAGE>

                                                                    EXHIBIT 10.2

                        PAREXEL INTERNATIONAL CORPORATION

                                 Amendment No. 1
                                       to
                            2001 STOCK INCENTIVE PLAN

The 2001 Stock Incentive Plan (the "Plan") of PAREXEL International Corporation
         is hereby amended as follows (capitalized terms used herein and not
         defined herein shall have the respective meaning ascribed to such terms
         in the Plan):

Section 5(f) shall be amended and restated in its entirety to read as follows:

         "(f) Payment Upon Exercise. Common Stock purchased upon the exercise of
         an Option granted under the Plan shall be paid for as follows:

                  (1)      in cash or by check, payable to the order of the
                           Company;

                  (2)      except as the Board may, in its sole discretion,
                           otherwise provide in an option agreement, by (i)
                           delivery of an irrevocable and unconditional
                           undertaking by a creditworthy broker to deliver
                           promptly to the Company sufficient funds to pay the
                           exercise price and any required tax withholding or
                           (ii) delivery by the Participant to the Company of a
                           copy of irrevocable and unconditional instructions to
                           a creditworthy broker to deliver promptly to the
                           Company cash or a check sufficient to pay the
                           exercise price and any required tax withholding;

                  (3)      by delivery of shares of Common Stock owned by the
                           Participant valued at their Fair Market Value,
                           provided (i) such method of payment is then permitted
                           under applicable law and (ii) such Common Stock, if
                           acquired directly from the Company was owned by the
                           Participant at least six months prior to such
                           delivery;

                  (4)      to the extent permitted by the Board, in its sole
                           discretion by (i) delivery of a promissory note of
                           the Participant to the Company on terms determined by
                           the Board, or (ii) payment of such other lawful
                           consideration as the Board may determine; or

                  (5)      by any combination of the above permitted forms of
                           payment.

                  A holder of an option who is a participant in a deferred
         compensation plan established by the Company may elect, with the
         permission of the Committee and in accordance with such rules as may be
         established by the Committee from time to time, to defer the receipt of
         any shares of Common Stock issuable upon the exercise of an Option,
         provided that such election is irrevocable and that such election is

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         made at least a specified number of days prior to the exercise of the
         Option which number of days shall be determined by the Committee. The
         optionee's account under such deferred compensation plan shall be
         credited with a number of shares of Common Stock equal to the number of
         shares so deferred."

Except as aforesaid, the Plan shall remain in full force and effect.

                              Adopted by the Board of Directors on July 1, 2003.<PAGE>

                                                                    EXHIBIT 10.3

                        PAREXEL INTERNATIONAL CORPORATION

                       NONQUALIFIED DEFERRED COMPENSATION
                                 PLAN AGREEMENT

                                 Amendment No. 1

                                  July 1, 2003

The Nonqualified Deferred Compensation Plan Agreement (the "Plan")
         of PAREXEL International Corporation is hereby amended as follows
         (capitalized terms used herein and not defined herein shall have the
         respective meaning ascribed to such terms in the Plan):

A new Section 4.1C is hereby added to the Plan to read in its entirety as
follows:

                  "4.1C        CONTRIBUTION OF STOCK

                               Notwithstanding anything contained herein to the
                               contrary, in addition to the deferral of
                               Compensation pursuant to the Plan, the Plan may
                               accept the transfer of amounts or assets deferred
                               by a Participant under any other deferral
                               arrangement provided by the Company, including
                               without limitation, any shares of Common Stock of
                               the Adopting Employer which, but for such
                               deferral, (i) would be issued to the Participant
                               upon exercise of stock options granted by the
                               Adopting Employer or (ii) be vested and
                               nonforfeitable in the case of restricted stock
                               issued to the Participant. Notwithstanding the
                               preceding provisions of this section 4.1C, any
                               amounts deferred in the form of shares of Common
                               Stock of the Adopting Employer shall be accounted
                               for on a share by share basis and when
                               distributed, shall be distributed in the form of
                               shares of Common Stock of the Adopting Employer."

Except as aforesaid, the Plan shall remain in full force and effect.

                              Adopted by the Board of Directors on July 1, 2003.

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