Behind the GM strike: Declining productivity at U.S. operations

The No. 1 U.S. automaker wants to boost productivity to offset financial pressure from a slowing global economy and investments in electric vehicles.The UAW is focused on increasing the share of profit going to workers, and closing wage gaps between full-time and temporary employees in GM factories.GM's unionized workers in the United States build some of the company's most profitable truck and sport utility vehicles.