The Small Business Development Center has free sets of the mandatory state workplace posters.
The free poster sets can be picked up at the SBDC/KEDA office at 405 Third St. – alley entrance behind the post office, or by calling Jenny Dougherty at 283-8585. 
They can also be ordered by calling 800-342-5354 or e-mail DLI.Post@state.mn.us [1].