EXHIBIT 99 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (the "AGREEMENT") is made on May 26, 2005 by and between OM GROUP, INC., a Delaware corporation (the "COMPANY"), and Joseph M. Scaminace, ("EXECUTIVE"). WHEREAS, the Company and Executive...Employment Agreement • June 2nd, 2005 • Om Group Inc • Secondary smelting & refining of nonferrous metals • Ohio
