Mich. Comp. Laws § 49.11
That in all criminal proceedings removed to the supreme court by writ of error, mandamus or otherwise, it shall be the duty of the prosecuting attorney of the county from which any cause is so removed to prepare a brief on behalf of the people therein, and to furnish the same to the attorney general where such cause is a calendar cause, at least 20 days before the time at which such cause is set for hearing, and in all other cases such prosecuting attorney shall furnish such brief to the attorney general at least 2 days before the time for the hearing of such cause. It shall be the duty of the prosecuting attorney of the county from which any cause is so removed where such cause is made a calendar cause on the request of the attorney general to appear on behalf of the people in the supreme court, and to assist the attorney general to conduct such cause in such court, and for his services in such case such prosecuting attorney shall, in addition to his regular salary, receive a reasonable compensation; including his expenses in traveling to and from, and on his attendance in such court, when so requested by the attorney general. Such expenses in traveling to and from and compensation for attendance in such court to be certified to by the attorney general and ascertained and determined by the board of state auditors, and paid by the state out of any funds belonging to the state not otherwise appropriated, and the expenses of preparing and printing any brief or argument prepared in such case shall be paid by the county from which the case is removed.
MCL 49.11