GM Plots Temp-Worker Push as Union Fumes Over Doomed Plants (1)

General Motors Co. wants to hire more temporary workers at U.S. plants and trim its health care costs, said people familiar with the automaker’s thinking. Its union—still steaming over the carmaker’s plans to close four U.S. factories—has little interest in obliging.

That sets up a hot summer of negotiations for the United Auto Workers and GM as the two try to hash out a new four-year labor deal in the coming months. The last contract was bargained over in better times, when auto sales were growing from financial crisis lows to all-time highs and GM was marching toward record profits. ...