In 1975, Marsh McLennan converted their benefits operations into a wholly owned subsidiary, William M. Mercer, Inc. In 1992, a holding company was created for Marsh McLennan's three global consulting businesses, known as Mercer Consulting Group. William M. Mercer, Inc. continued to provide actuarial and employee benefits consulting within the group alongside two sister companies: Mercer Management Consulting and National Economic Research Associates, Inc, which provided corporate strategy consulting and economic consulting, respectively.
