Canada's government stepped in four times to aid seven companies last year, stopping strikes using an obscure Labour Code provision. A similar decree on Sunday failed, however, as Air Canada's flight attendants refused to obey and stayed on strike for three days.

Air Canada has suspended plans to restart operations after the union representing 10,000 flight attendants decided to defy a return-to-work order

TORONTO — Air Canada said it will gradually restart operations after reaching an agreement early on Tuesday with the union for 10,000 flight attendants to end a strike that disrupted the travel plans of hundreds of thousands of travelers.