The United Auto Workers union (UAW) has said that some local units representing Stellantis workers in the US are preparing to file grievances, which could trigger a nationwide strike, according to Reuters.

The UAW accused Stellantis on not honouring production commitments that were made in 2023 as part of a new labour agreement.

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On its website, the union said: “Thousands of UAW members sacrificed on the picket line to win this contract, and we intend to enforce it, even if that means going back on strike.”

Stellantis agreed to build a new $3.2 billion battery plant and invest $1.5 billion in a new mid-size truck factory in Belvidere, Illinois.

It also said it would add 5,000 total US jobs by 2028 as part of a new contract deal, according to the union, in November 2023.

Stellantis did not immediately respond to requests for comment to Reuters.

The UAW said the automaker would not launch the Illinois investments on the previously agreed timetable, without specifying the dates.

Stellantis recently announced it was laying off over 2,000 factory workers from its Warren Truck assembly plant as it ends production of the Ram 1500 Classic truck.

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