EXHIBIT 10.4
                                
                                
                   CHANGE OF CONTROL AGREEMENT
                                
                                
                                
      AGREEMENT, dated as of October 20, 1998, by and
between PAREXEL International Corporation (the "Company") and
Barry Philpott (the "Executive").

     WHEREAS, the Executive is a senior executive of the Company
and has made and is expected to continue to make major
contributions to the Company;

     WHEREAS, the Company desires continuity of management; and

     WHEREAS, the Executive is willing to continue to render
services to the Company subject to the conditions set forth in
this Agreement.

     NOW, THEREFORE, for good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, the
Company and the Executive agree as follows:

     1.   Termination Prior to a Change of Control.

     (a)  If, within nine months prior to a Change of Control and
subsequent to the commencement of the substantive discussions
that ultimately result in the Change of Control a "Change of
Control" (as such term is defined in Section 3(b) below), the
Company terminates the Executive's employment with the Company
without "Cause" (as such term is defined in Section 3(c) below)
or the Executive terminates his/her employment with the Company
for "Good Reason" (as such term is defined in Section 1(b)
below); provided, however, that any such termination by the
Executive must occur promptly (and in any event within 90 days)
after the occurrence of the event or events constituting "Good
Reason", the Company shall:

          (1)  Pay to the Executive, within ten business days
          following the Change of Control, a lump sum amount (net
          of any required withholding) equal to the amount of
          monthly base salary (at the highest monthly base salary
          rate in effect for such Executive in the twelve month
          period prior to the termination of his or her
          employment) that would have been paid to such Executive
          had he or she remained an employee of the Company
          through the Change of Control; and

          (2)  Pay to the Executive, within ten business days
          following the Change of Control, a lump sum amount (net
          of any required withholding) equal to: (i) twelve
          months of monthly base salary (at the highest monthly
          base salary rate in effect for such Executive in the
          twelve month period prior to the termination of his or
          her employment), plus (ii)  the maximum bonus that
          could have been payable to such Executive (assuming
          continued employment) during the year in which the
          Change of Control occurs based on bonus arrangements in
          effect at any time during the twelve month period
          immediately prior to the termination of his or her
          employment which would pay the Executive the highest
          maximum bonus (all payments under this Section 1(a)(2)
          being referred to, collectively, as the "Severance
          Payments"); and

          (3)  Provide the Executive and his or her dependents
          with life, accident, health and dental insurance
          substantially similar to that which the Executive was
          receiving immediately prior to the termination of his
          or her employment until the earlier of:  (i) the date
          which is twelve months following the Change of Control;
          or (ii) the date the Executive commences subsequent
          employment; and

          (4)  On the Change of Control, cause any unexercisable
          installments of any stock options held by the Executive
          on the Executive's last date of employment with the
          Company that have not expired to become exercisable on
          the Change of Control; provided, however, that:
          (i) such acceleration of exercisability shall not occur
          to the extent that:  (A) the Change of Control is
          intended to be accounted for as a pooling of interests;
          and (B) the Company concludes, after consulting with
          its independent accountants, that such acceleration
          would prevent the Change of Control transaction from
          being accounted for as a pooling of interests for
          financial accounting purposes;  (ii) such acceleration
          of exercisability shall not occur as to any option if
          the Change of Control does not occur within the period
          within which the Executive may exercise such option
          after a termination of employment in accordance with
          the provisions of the relevant option agreement and
          option plan; and (iii) any such acceleration of
          exercisability shall not extend the period after a
          termination of employment within which any option may
          be exercised by the Executive in accordance with the
          provisions of the relevant option agreement and option
          plan.

          (5)  Beginning on the Change of Control, provide
          executive outplacement services from an outplacement
          company selected by the Executive, with such services
          to extend until the earlier of:  (i) twelve months
          following the Change of Control; or (ii) the date on
          which the Employee secures new full-time employment;
          provided, however, that the Company shall not be
          required to provide more than $25,000 of such services
          to the Executive.

          (6)  On the Change of Control, cause any unvested
          portion of any qualified or non-qualified capital
          accumulation benefits to become immediately vested
          (subject to applicable law).

provided, however, that any amounts and benefits set forth in
this Section 1 shall be reduced by any and all other severance or
other amounts or benefits paid or payable to the Executive as a
result of the termination of his or her employment.

     (b)  For purposes of this Section 1, "Good Reason" shall
mean:  (i) the assignment to the Executive of any duties
inconsistent in any adverse, material respect with his/her
position, authority, duties or responsibilities as of the date of
this Agreement or any other action by the Company which results
in a material diminution in such position, authority, duties or
responsibilities; (ii) a material reduction in the aggregate of
the Executive's base or incentive compensation or the termination
of the Executive's rights to any employee benefits, except to the
extent any such benefit is replaced with a comparable benefit, or
a reduction in scope or value thereof, other than as a result of
across-the-board reductions or terminations affecting officers of
the Company generally; or (iii) a relocation of the Executive's
place of business which results in the one-way commuting distance
for the Executive increasing by more than 20 miles provided,
however, that travel consistent with past practices for business
purposes shall not be considered "commuting" for purposes of this
clause.

     2.   Termination Following a Change of Control.

     (a)  If, at any time during a period commencing with a
Change in Control and ending eighteen months after such Change in
Control, the Company terminates the Executive's employment
without Cause or the Executive terminates his/her employment with
the Company for "Good Reason" (as such term is defined in Section
2(b) below); provided, however, that any such termination by the
Executive must occur promptly (and in any event within 90 days)
after the occurrence of the event or events constituting "Good
Reason", the Company shall:

          (1)  Pay to the Executive, within ten business days
          following the Executive's last date of employment, a
          lump sum amount (net of any required withholding) equal
          to: (i) twelve months of monthly base salary (at the
          highest monthly base salary rate in effect for such
          Executive in the twelve month period prior to the
          termination of his or her employment), plus (ii) the
          maximum bonus that could have been payable to such
          Executive (assuming continued employment) during the
          year in which the termination of employment occurs
          based on bonus arrangements in effect immediately prior
          to the termination of his or her employment
          (collectively, the "Severance Payments").

          (2)  Provide the Executive and his or her dependents
          with life, accident, health and dental insurance
          substantially similar to that which the Executive was
          receiving immediately prior to the termination of his
          or her employment until the earlier of:  (i) the date
          which is twelve months following the termination of the
          Executive's employment; or (ii) the date the Executive
          commences subsequent employment.

          (3)  Cause any unexercisable installments of any stock
          options held by the Executive on the Executive's last
          date of employment with the Company that have not
          expired to become exercisable on such last date of
          employment; provided, however, that:  (i) such
          acceleration of exercisability shall not occur to the
          extent that:  (A) the Change of Control is intended to
          be accounted for as a pooling of interests; and (B) the
          Company concludes, after consulting with its
          independent accountants, that such acceleration would
          prevent the Change of Control transaction from being
          accounted for as a pooling of interests for financial
          accounting purposes; (ii) such acceleration of
          exercisability shall not occur as to any option if the
          Change of Control does not occur within the period
          within which the Executive may exercise such option
          after a termination of employment in accordance with
          the provisions of the relevant option agreement and
          option plan; and (iii) any such acceleration of
          exercisability shall not extend the period after a
          termination of employment within which any option may
          be exercised by the Executive in accordance with the
          provisions of the relevant option agreement and option
          plan.

          (4)  Provide executive outplacement services from an
          outplacement company selected by the Executive, with
          such services to extend until the earlier of:
          (i) twelve months following the termination of the
          Executive's employment; or (ii) the date on which the
          Employee secures new full-time employment; provided,
          however, that the Company shall not be required to
          provide more than $25,000 of such services to the
          Executive.

          (5)  Cause any unvested portion of any qualified and
          non-qualified capital accumulation benefits to become
          immediately vested, subject to applicable law.

provided, however, that: any amounts and benefits set forth in
this Section 2 shall be reduced by any and all other severance or
other amounts or benefits paid or payable to the Executive as a
result of the termination of his or her employment.

     (b)  For purposes of Section 2, "Good Reason" shall mean the
occurrence of one or more of the following events following a
Change of Control:  (i) the assignment to the Executive of any
duties inconsistent in any adverse, material respect with his/her
position, authority, duties or responsibilities immediately prior
to the Change of Control or any other action by the Company which
results in a material diminution in such position, authority,
duties or responsibilities; (ii) a material reduction in the
aggregate of the Executive's base or incentive compensation or
the termination of the Executive's rights to any employee
benefits immediately prior to the Change of Control, except to
the extent any such benefit is replaced with a comparable
benefit, or a reduction in scope or value thereof; or (iii) a
relocation of the Executive's place of business which results in
the one-way commuting distance for the Executive increasing by
more than 20 miles from the location thereof immediately prior to
the Change of Control (provided, however, that travel consistent
with past practices for business purposes shall not be considered
"commuting" for purposes of this clause (iii)) or (iv) a failure
by the Company to obtain the agreement referenced in
Section 3(g).

     3.   General.

     (a)  In the event the Executive's employment with the
Company is terminated by the Company other than during the
specific time periods set forth in Section 1(a) and Section 2(a)
or for any reason other than without Cause, or the Executive
terminates his/her employment with the Company other than during
the specific time periods set forth in Section 1(a) and Section
2(a) or for any reason other than Good Reason, the Executive
shall not be entitled to the severance benefits or other
considerations described herein by virtue of this Agreement.

     (b)  For purposes of this Agreement, "Change of Control"
shall mean the closing of:  (i) a merger, consolidation,
liquidation or reorganization of the Company into or with another
Company or other legal person, after which merger, consolidation,
liquidation or reorganization the capital stock of the Company
outstanding prior to consummation of the transaction is not
converted into or exchanged for or does not represent more than
50% of the aggregate voting power of the surviving or resulting
entity; (ii) the direct or indirect acquisition by any person (as
the term "person" is used in Section 13(d)(3) or 14(d)(2) of the
Securities Exchange Act of 1934, as amended) of more than 50% of
the voting capital stock of the Company, in a single or series of
related transactions; or (iii) the sale, exchange, or transfer of
all or substantially all of the Company's assets (other than a
sale, exchange or transfer to one or more entities where the
stockholders of the Company immediately before such sale,
exchange or transfer retain, directly or indirectly, at least a
majority of the beneficial interest in the voting stock of the
entities to which the assets were transferred).

     (c)  For purposes of this Agreement, "Cause" shall mean: (i)
the commission of the Executive of a felony, either in connection
with the performance of his/her obligations to the Company or
which adversely affects the Executive's ability to perform such
obligations; (ii) gross negligence, breach of fiduciary duty or
breach of any confidentiality, non-competition or developments
agreement in favor of the Company; or (iii) the commission by the
Executive of an act of fraud or embezzlement or other acts in
intentional disregard of the Company which result in loss, damage
or injury to the Company, whether directly or indirectly.

     (d)  Notwithstanding anything to the contrary in this
Agreement,  if any portion of any payments received by Executive
from the Company (whether payable pursuant to the terms of this
Agreement or any other plan, agreement or arrangement with the
Company, its successors or any person whose actions result in a
change of control of the Company) shall be subject to tax imposed
by Section 4999 of the Internal Revenue Code of 1986, as amended
or any successor statutory provision, the Company shall pay to
Executive such additional amounts as are necessary so that, after
taking into account any tax imposed by Section 4999 (or any
successor statutory provision), and any federal and state income
taxes payable on any such tax, the Executive is in the same after-
tax position that he or she would have been if such Section 4999
(or any successor statutory provision) did not apply and no
payments were made pursuant to this Section 3(d).  The Executive
and the Company shall each reasonably cooperate with the other in
connection with any administrative or judicial proceedings
concerning the existence or amount of liability for Excise Tax
with respect to the Payments.  All determinations required to be
made under this Section 5(i), including whether a Gross-Up
Payment is required and the amount of such Gross-Up Payment,
shall be made by the Company, after consultation with its tax and
accounting advisors.

     (e)  The parties hereto expressly agree that the payments by
the Company to the Executive in accordance with the terms of this
Agreement will be liquidated damages, and that the Executive
shall not be required to mitigate the amount of any payment
provided for in this Agreement by seeking other employment or
otherwise, nor shall any profits, income, earnings or other
benefits from any source whatsoever create any mitigation,
offset, reduction or any other obligation on the part of the
Executive.

     (f)  The Company shall pay or cause to be paid and shall be
solely responsible for any and all attorneys' fees and expenses
incurred by the Executive:  (i) in connection with the
Executive's review and execution of this Agreement; and (ii) to
enforce his or her rights under this Agreement, solely in the
event that the Company is found by a court of competent
jurisdiction, an arbitrator or through a mutual settlement
agreement to have failed to perform its obligations under this
Agreement.
     
     (g)  Except as otherwise provided herein, this Agreement
shall be binding upon and inure to the benefit of the Company and
any successor (whether direct or indirect, by purchase, merger,
consolidation, reorganization or otherwise) of the Company;
provided, however, that as a condition of closing the transaction
which results in a change of control, the Company shall obtain
the written agreement of any successor (whether direct or
indirect, by purchase, merger, consolidation, reorganization or
otherwise) of the Company to be bound by the provisions of this
Agreement as if such successor were the Company and for purposes
of this Agreement, any such successor of the Company shall be
deemed to be the "Company" for all purposes.
    
    (h)  Nothing in this Agreement shall create any obligation
on the part of the Company or any other person to continue the
employment of the Executive.  If the Executive elects to receive
the severance and benefits set forth in Section 1 or Section 2,
the Executive shall not be entitled to any other salary
continuation or severance benefits in the event of his/her
cessation of employment with the Company.
    
    (i)  Nothing herein shall affect the Executive's obligations
under any key employee, non-competition, confidentiality, option
or similar agreement between the Company and the Executive
currently in effect or which may be entered into in the future.
    
    (j)  This Agreement shall be governed by and construed in
accordance with the laws of the Commonwealth of Massachusetts.
This Agreement constitutes the entire Agreement between the
Executive and the Company concerning the subject matter hereof
and supersedes any prior negotiations, understandings or
agreements as such relates to any severance payment in the
context of a change in control, whether oral or written, and may
be amended or rescinded only upon the written consent of the
Company and the Executive.  The invalidity or unenforceability of
any provision of this Agreement shall not affect the other
provisions of this Agreement and this Agreement shall be
construed and reformed to the fullest extent possible.  The
Executive may not assign any of his/her rights or obligations
under this Agreement; the rights and obligations of the Company
under this Agreement shall inure to the benefit of, and shall be
binding upon, the successors and assigns of the Company.  This
Agreement may be executed in any number of counterparts, all of
which taken together shall constitute one and the same
instrument.
    
    (k)  Company and Employee agree to enter into a mutually
acceptable Consulting Agreement of up to a four (4) year term.











     IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be executed as of the date first written above.


                              The Company:
                              
                              PAREXEL INTERNATIONAL CORPORATION
                              
                              By:/s/Josef H. von Rickenbach
                              
                              Name:  Josef H. von Rickenbach
                              
                              Title:  Chairman and CEO
                              
                              
                              The Executive:
                              
                              Signature:  /s/Barry R. Philpott
                              
                              Printed Name:  Barry R. Philpott