Mich. Comp. Laws § 750.355

Sec. 355. Temporary waterclosets for workmen in buildings in course of construction—Any architect who shall refuse, fail or neglect to insert a clause in the specifications for all buildings providing for suitable temporary water closets for the use of workmen employed on such buildings while in the course of erection, unless closets are already maintained on such premises; and any contractor or person erecting such building who shall refuse, fail or neglect to erect such closet within the first week after commencing work thereon, shall be guilty of a misdemeanor.