General Motors was reported today to be planning job cuts at two U.S. assembly plants over the next three years.

The moves would match the automaker's North American production with demand, the Detroit News said. The plants, in Lansing, Mich., and Lordstown, Ohio, build cars that are being discontinued or relocated to other factories. Lansing Car Assembly employs 2,658 workers. GM declined to comment on how many jobs may be eliminated.

Troy Clarke, group vice president of manufacturing and labor relations for GM, said the ability to reduce jobs at the plants, and possibly other factories, is included in the automaker's new four-year labor contract with the United Auto Workers Union.

The agreement also allows GM to close Baltimore and Saginaw assembly plants.