Mich. Comp. Laws § 423.233: Initiation of binding arbitration proceedings; request.

Sec. 3.

Whenever in the course of mediation of a public police or fire department employee's dispute, except a dispute concerning the interpretation or application of an existing agreement (a "grievance" dispute), the dispute has not been resolved to the agreement of both parties within 30 days of the submission of the dispute to mediation, or within such further additional periods to which the parties may agree, the employees or employer may initiate binding arbitration proceedings by prompt request therefor, in writing, to the other, with copy to the employment relations commission.