Don’t forget that Minnesota’s minimum wage rates increase January 1, 2020 to $10 for large employers and $8.15 for others. Updated posters (which employers must post where employees can see them) can be found here. Keep in mind that this is a state minimum wage.
If employers are doing business in Minneapolis, it has its own minimum wage ordinance which trumps the state rates as the wages are higher; those wage rates can be found here and increase next in July 2020. St. Paul has its own ordinance as well, which begins its phase-in (to $15) starting January 1, 2020; those rates can be found here.