The Michigan Senate approves a minimum wage bill. The bill which was introduced last week, was voted on yesterday, and will raise the state's current minimum wage to $9.20 per hour by 2017. The law also included raising the hourly rate of tipped employees from $2.65 to $3.50 an hour. The first wage increase will be in September to $8.15. The bill is now on its way to the House for approval.