Grundy was executive director of HealthChoice, a county health program for the needy. He also was an assistant county executive until fall 2011.
Michael Grundy pleaded guilty Tuesday in Detroit federal court to a conspiracy charge.
Extortion charges have been filed against Michael Grundy, who was entrusted with operating a health care program for low-income, uninsured workers.
Wayne County Executive Bob Ficano Monday announced Michael Grundy, who was working with the Health Choice Program and was the focus of an FBI investigation, was terminated.