The work stoppage marks the first escalation in the union's strike in nearly two weeks and the first new work stoppage at Stellantis in over a month.

The United Auto Workers union is expanding its strike to a Stellantis plant in Michigan that produces Ram 1500 full-size pickup trucks, dealing another blow to the three major U.S. automakers as negotiations drag on.

The work stoppage includes roughly 6,800 workers at Stellantis’ Sterling Heights Assembly Plant in suburban Detroit, the union announced Monday after initiating the walkout.

“Currently, Stellantis has the worst proposal on the table regarding wage progression, temporary worker pay and conversion to full-time, cost-of-living adjustments (COLA), and more,” the UAW said in a release.