Mich. Comp. Laws § 38.1201

Sec. 1. This act applies to employees of the state who are not classified state civil service employees. This act does not apply to employees in the legislative and judicial branches of government, those elected by popular election, employees of state institutions of higher education, persons in the armed forces of the state, employees who serve without salary, or to members of boards or commissions who are paid at a per diem rate.