Exhibit 32.2 CERTIFICATION OF CHIEF FINANCIAL OFFICER OF CENTURY BUSINESS SERVICES, INC. This certification is provided pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and accompanies the quarterly report on Form 10-Q for the quarter ended March 31, 2004 (the "Form 10-Q") of Century Business Services, Inc. (the "Issuer"). I, Ware H. Grove, the Chief Financial Officer of the Issuer, certify that to the best of my knowledge: (i) the Form 10-Q fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and (ii) the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Issuer. Date: May 10, 2004 /s/ Ware H. Grove ---------------------------- Ware H. Grove Chief Financial Officer Subscribed and sworn to before me this 10th day of May, 2004. /s/ Michael W. Gleespen - ------------------------------------ Name: Michael W. Gleespen Title: Notary Public & Attorney-At-Law Registered in Franklin County, Ohio No Expiration Date