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The union, which represents 1,200 dockworkers, gave 72-hour strike notice on Sept. 27 to the Maritime Employers Association.

The world’s top container carrier is urging customers to move U.S. cargo through East and Gulf Coast ports before the planned start on Oct. 1 of a dockworkers strike.

U.S. ports reported strong results amid efforts in August to move cargo ahead of the holiday shipping season and a potential strike.

Grain workers at Canada’s largest port went on strike Sept. 24 over a dispute regarding hours and pay, creating what an industry association called a “devastating” situation for farmers.

Canadian railway operations have resumed after a brief work stoppage, following government intervention in an ongoing labor dispute.

A union filed strike notice against Canada’s largest railway on Aug. 23 just hours after trains began rolling again, likely derailing plans to revive vital shipping networks.

Canada’s two largest railways are preparing to restart operations after the country's government stepped in to try to end a labor dispute that has halted freight movement.

Importers and exporters are left with few options as a near-total rail shutdown in Canada risks delaying ocean shipments, spiking freight costs and straining the busiest U.S. ports.

The Canadian railway system has been struck with two major work stoppages amid failed labor negotiations Aug. 22.

Prime Minister Justin Trudeau is urging Canada’s two largest railways and unionized workers to reach a deal to avert a strike that businesses warn will cause significant harm to the economy.