GM Subsystems avoids strike, reaches tentative agreement with UAW

The United Auto Workers union on Thursday reached a tentative agreement with GM Subsystems LLC, avoiding a strike at GM Michigan plants by the subsidiary’s employees that could have halted production of trucks, EVs and Cadillac cars. 

Subsystems employees are not covered in the GM-UAW national contract and make nearly half the wage rate of a regular GM employee.

The dispute over how subsidiary employees are paid — among other issues — is likely to come up again as the UAW tries to unionize GM’s battery plants. The first plant, opening in northeast Ohio later this year, is owned by Ultium Cells LLC, a GM and LG Energy Solution joint venture. Employees at the four planned battery plants would also not be covered by the GM-UAW national agreement. 

It’s likely the UAW will try to get the subsidiary and joint venture employees under the national agreement or at least negotiate separate contracts at the same time.

“What unions try to do is synchronize and standardize their contracts to maximize their bargaining power,” said Marick Masters, a business professor at Wayne State University. “They’re not going to allow GM to easily splinter their workforce into different types of ownership arrangements, and thereby dilute the bargaining power of the UAW.”

The Subsystems agreement came right before a 10 a.m. strike deadline, with UAW Vice President Terry Dittes writing in a Thursday morning letter to members: “We will not be conducting a work stoppage at the four locations who we bargained an agreement for.”

The four locations with Subsystems workers covered by the contract are: Lansing Grand River, where the Chevrolet Camaro and Cadillac CT4 and CT5 cars are made; Flint Assembly, home to GM’s profit-rich heavy-duty trucks; and Orion Assembly, which recently restarted production of the Chevy Bolt EV and EUV after a months-long halt amid a battery recall. Factory Zero Detroit-Hamtramck Assembly Center, where the new GMC Hummer EV is made, is also covered by the agreement, but that plant is down for a production expansion project.