CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Annual Report on Form 10-K of PAREXEL International Corporation (the Company) for the fiscal year
ended June 30, 2010 as filed with the Securities and Exchange Commission on the date hereof (the Report), the undersigned, Josef H. von Rickenbach, Chief Executive Officer of the Company, hereby certifies, pursuant to 18 U.S.C.
Section 1350, that, to his knowledge:
The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
Date: August 27, 2010
/s/ Josef H. von Rickenbach
|Josef H. von Rickenbach|
|Chairman of the Board and Chief Executive Officer|
A signed original of this written statement required by Section 906 has been provided to PAREXEL International Corporation and will
be retained by PAREXEL International Corporation and furnished to the Securities and Exchange Commission or its staff upon request.