Mich. Comp. Laws § 15.217

Sec. 7. The determinations of the commission shall be the salaries and expense allowances only if the legislature by concurrent resolution adopted by a majority of the members elected to and serving in each house of the legislature approve them. The senate and house of representatives shall alternate on which house of the legislature shall originate the concurrent resolution, with the senate originating the first concurrent resolution in 2009. The concurrent resolution may amend the salary and expense determinations of the state officers compensation commission to reduce the salary and expense determinations by the same proportion for the members of the legislature, the governor, the lieutenant governor, the attorney general, the secretary of state, and the justices of the supreme court. The legislature shall not amend the salary and expense determinations to reduce them to below the salary and expense level that the members of the legislature, the governor, the lieutenant governor, the attorney general, the secretary of state, and the justices of the supreme court receive on the date the salary and expense determinations are made. If the salary and expense determinations are approved or amended as provided in this section, the salary and expense determinations shall become effective for the regular legislative session immediately following the next general election.