DES MOINES, Iowa (AP) – Polk County supervisors have given final approval to raising the minimum wage to $10.75 an hour within the next 30 months. The Board of Supervisors voted 4-0 for the proposal Tuesday in the third of three required readings and approvals. The current $7.25 rate will rise to $8.75 an hour in April, to $9.75 in January 2018 and finally to $10.75 in January 2019.

Polk County becomes the fourth in Iowa to raise the minimum wage, following actions by Johnson, Linn and Wapello counties.  The Polk County measure includes freezing the tipped-worker minimum wage at $5 per hour, rather than keeping the rate at 60 percent of the overall minimum wage. And it includes a lower figure for workers 17 and under: 85 percent of the new minimum wage.