Michigan Compiled Laws, Chapter 32. Military Establishment § 32.273a

(a) “Differential pay program” means a program through which the local unit of government agrees to pay during the leave of absence all or a part of the difference between the amount the employee is paid by the local unit of government and the amount the employee receives through his or her uniformed service if the amount paid by the local unit of government exceeds the amount paid by the uniformed service.

(b) “Local unit of government” means a city, village, township, or county.