CERTIFICATION OF CHIEF EXECUTIVE OFFICER
Pursuant to 18 U.S.C. Section 1350
Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
In connection with the Quarterly Report of Jacobs Engineering Group Inc. (the Company) on Form 10-Q for the quarter ended April 2,
2010 as filed with the Securities and Exchange Commission on the date hereof (the Report), I, Craig L. Martin, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002, that: (1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (2) the information contained in the Report fairly
presents, in all material respects, the financial condition and results of operations of the Company.
|/s/ Craig L. Martin|
Craig L. Martin
April 29, 2010
original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.