EXHIBIT 99.1 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 Workstream Inc. (the "Company") on Form 10-Q for the period ended August 31, 2002, as filed with the Securities Exchange Commission on date hereof (the "Report"), I, Michael F. Mullarkey, the Chief Executive Officer of the Company, certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge: 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/ Michael Mullarkey ---------------------------------- Michael F. Mullarkey Chief Executive Officer Date: October 15, 2002