Justin Trudeau said out loud what many were wondering as the postal strike dragged into its fourth week. “It is endangering the long-term viability of Canada Post as a service that Canadians rely on,” the prime minister said.

Canada Post workers' strike ends as 55,000 employees return to work after a ruling by the Industrial Relations Board. Learn about the resolution and its impact

Canada Post said on Monday its striking workers will return to work on Tuesday, Dec. 17 after the country's labor relations board ordered an end to the work stoppage.