Mich. Comp. Laws § 393.504: Notification of need for or right to interpreter; proof of deafness.

Sec. 4.

(1) Each deaf or deaf-blind person whose appearance in an action or other proceeding entitles the deaf or deaf-blind person to a qualified interpreter shall provide reasonable notice to the appointing authority of the need of a qualified interpreter before the appearance. Each deaf or deaf-blind person who is entitled to a qualified interpreter as an accommodation under state or federal law shall provide reasonable notice to the appointing authority of the need for a qualified interpreter.

(2) An appointing authority, when it knows a deaf or deaf-blind person is or will be coming before it, shall inform the deaf or deaf-blind person of the right to a qualified interpreter.

(3) An appointing authority may require a person requesting the appointment of a qualified interpreter to furnish reasonable proof of the person's deafness, if the appointing authority has reason to believe that the person is not deaf or deaf-blind.