Workers at Mack Trucks reject contract, join UAW picketers

DETROIT (AP) — Union workers at Mack Trucks are on strike after voting down a tentative five-year contract agreement that negotiators had reached with the company.

The United Auto Workers said 4,000 unionized workers walked out at 7 a.m. Monday, adding to labor turmoil in the industry that has ensnared all three big Detroit automakers.

Union President Shawn Fain said in a letter to Mack parent company Volvo Trucks that 73% of workers voted against the deal in results counted on Sunday.

The UAW represents Mack workers in Pennsylvania, Maryland and Florida.

Union leaders had reached a tentative agreement on the deal on Oct. 1.