Mich. Comp. Laws § 600.4815: Fines and costs; execution.

Sec. 4815.

Execution may issue for the collection of fines and costs imposed for misdemeanors, or offenses punishable by fine or imprisonment, or fine and imprisonment, in all cases where no alternative sentence or judgment of imprisonment has been rendered. No person may be imprisoned under and by virtue of such execution for a greater period than 90 days.