Michigan Compiled Laws, Chapter 418. Worker's Disability Compensation § 418.859a

Sec. 859a. (1) Except as otherwise provided for in this act, a claim for review of a case for which an application under section 847  1 is filed after March 31, 1986 shall be filed with the appellate commission. A claim for review shall be filed with the commission not more than 30 days after the date the order of the worker's compensation magistrate or director is sent to the parties. For sufficient cause shown, the commission may grant further time in which to claim a review.

(2) If the employer or carrier files a claim for review to the appellate commission, or appeals to the court of appeals, or the supreme court, a copy of the testimony, depositions, and other documents necessary for the appeal shall be furnished by the employer or carrier to the employee or the employee's attorney.