Mich. Comp. Laws § 15.405

Sec. 5. A public employer, public employee or an elected or appointed official may not personally, or through an agent, coerce, attempt to coerce, or command another public employee to pay, lend, or contribute anything of value to a party, committee, organization, agency, or person for the benefit of a person seeking or holding elected office, or for the purpose of furthering or defeating a proposed law, ballot question, or other measure that may be submitted to a vote of the electors.