Mich. Comp. Laws § 393.503

Sec. 3. (1) In any action before a court or a grand jury where a deaf or deaf-blind person is a participant in the action, either as a plaintiff, defendant, or witness, the court shall appoint a qualified interpreter to interpret the proceedings to the deaf or deaf-blind person, to interpret the deaf or deaf-blind person's testimony or statements, and to assist in preparation of the action with the deaf or deaf-blind person's counsel. (2) In a proceeding before an appointing authority, other than a court, the appointing authority shall appoint a qualified interpreter to interpret the proceedings to the deaf or deaf-blind person and to interpret the deaf or deaf-blind person's testimony or statements in any proceeding before the appointing authority. (3) The right of a deaf or deaf-blind person to a qualified interpreter shall not be waived except by a request for waiver in writing by the deaf or deaf-blind person. A written waiver of a plaintiff or defendant is subject to the approval of the deaf or deaf-blind person's counsel and the approval of the appointing authority. (4) A qualified interpreter shall not be appointed unless the appointing authority and the deaf or deaf-blind person make a preliminary determination that the qualified interpreter is able to readily communicate with the deaf or deaf-blind person and to interpret the proceedings in which the deaf or deaf-blind person is involved. (5) If a qualified interpreter states that the interpreter is unable to render a satisfactory interpretation and that an intermediary interpreter or deaf interpreter will improve the quality of the interpretation, the appointing authority shall appoint an intermediary interpreter or deaf interpreter to assist the qualified interpreter.