Mich. Comp. Laws § 18.363

Sec. 13. The record of a proceeding before the commission is a public record, except that a claimant's file and his or her testimony before the commission is exempt from disclosure under the freedom of information act, Act No. 442 of the Public Acts of 1976, being sections 15.231 to 15.246 of the Michigan Compiled Laws. A record or report obtained by the commission, the confidentiality of which is protected by any other law or rule, shall remain confidential.