Mich. Comp. Laws § 71.13: Street administrator; report.

Sec. 13.

The street administrator shall provide the council, in writing and on oath once in each month, an exact report of all labor performed by the street administrator, or under his or her supervision, and the charges therefor; the amount of material used, and the expense thereof; the street or other place where the material was used, or labor performed; and the items and purpose of all expenses incurred since his or her last preceding report.