Exhibit 32.1 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 Quarterly Report of Foster Wheeler Ltd. (the "Company") on Form 10-Q for the period ended September 26, 2003, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I Raymond J. Milchovich, Chairman, President and Chief Executive Officer of the Company, certify pursuant to 18 U.S.C. ss1350, 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 the operations of the Company. Date: November 10, 2003 /s/ Raymond J. Milchovich --------------------------------- Name: Raymond J. Milchovich Title: Chairman, President and Chief Executive Officer