Michigan Compiled Laws, Chapter 423. Labor Disputes and Employment Relations § 423.25a

Sec. 25a. (1) Except as provided in subsection (2), a member of the commission or a labor mediator, or other agent of the commission dealing with the mediation process shall not disclose confidential information received by him for the purpose of resolving a dispute in the course of his official duties under this act.

(2) Subsection (1) shall not apply to confidential information received by a member of the commission or a labor mediator, or other agent of the commission dealing with the mediation process from an informant who is a victim of or involved in a crime, other than criminal contempt in a proceeding arising out of a violation of this act, at a legislative, administrative, or judicial proceeding in which the commission of that crime is the subject of inquiry.

(3) As used in this section, “confidential information” means a statement, report, memorandum, document, or other communication or instrument which is not intended to be disclosed to third persons other than those to whom disclosure is necessary to enable the member of the commission or the labor mediator, or other agent of the commission dealing with the mediation process to perform his duties in resolving the dispute.