Mich. Comp. Laws § 462.43
Any common carrier subject to the operation of this act, or whenever such common carrier is a corporation, any director or officer thereof, or any receiver, trustee, lessee, agent or person employed by such corporation, who alone or with any other corporation, company, person or party, shall willfully do or cause to be done, or shall willfully suffer or permit to be done any act, matter or thing in this act prohibited or declared to be unlawful, or who shall aid or abet therein, or who shall willfully omit or fail to do any act, matter or thing in this act required to be done, or shall cause or willfully suffer or permit any act, matter or thing so directed or required by this act to be done, not to be so done, or shall do or abet any such omission or failure, or shall be guilty of any infraction of this act, or shall aid or abet therein, or who shall willfully disobey or knowingly fail or neglect to obey any lawful order made under the provisions of this act by the Michigan railroad commission, or shall aid and abet any such disobedience or omission or failure shall be deemed guilty of a misdemeanor, and shall, upon conviction thereof in any court having jurisdiction of misdemeanors, if a penalty for such offense be not elsewhere provided in this act, be subject to a fine of not to exceed 500 dollars for each offense, in the discretion of the court, or if the convicted party be a natural person, he shall be liable to be punished by imprisonment in the county jail for a period of not to exceed 3 months, or both such fine and imprisonment in the discretion of the court.
MCL 462.43