TORONTO—To be an autoworker in Canada this year has meant living with a fair bit of uncertainty. “There’s no consistency,” said Mark Sciberras, president of the Unifor local branch at Ford Motor Co.’s Oakville, Ont. operations. “One week to the next, you don’t know if you’re working.” The Oakville plant, like so many auto assembly lines globally, has seen its production start and stop numerous times this year because of the severe semiconductor chip shortage caused by pandemic-related production issues and a surge in demand for electronics. As the supply chain issues drag on though, it has become clear that Canada’s production slowdown is worse than many other countries. “Canada’s definitely being hit hard,” said Sam Fiorani, head of global vehicle forecasting at AutoForecast Solutions. Production in Canada for the 12 months to July of this year was down 6.6 percent compared with a year earlier—levels that were already low …