Protesters covered their mouths with tape Wednesday in Lansing with the words "$1,500 less" written on it in reference to wage cuts they expect. Silent protests also took place in Saginaw and were planned elsewhere.
In Detroit, 150 to 200 chanting protesters entered a state of Michigan office building to voice their opposition to right-to-work.
In Marquette, state police say they arrested eight people for trespassing after they refused to leave Gov. Rick Snyder's northern Michigan office at closing time Wednesday.
On Tuesday, the state House gave final legislative approval and Snyder signed bills barring unions from collecting mandatory fees from workers they represent under collective bargaining agreements.