Mich. Comp. Laws § 123.822

Sec. 2. The foregoing schedule shall apply to all incorporated cities of this state, except where incorporated cities having more than 40,000 population adjoin or lie within the boundaries of an incorporated city that has more than 500,000 population. In this case police officers and policemen of the smaller city and having 3 or more years police service shall receive not less than $2,640.00 per year.