A woman checks for mail at her community mailbox in Montreal on Friday. Thousands of workers have walked off the job for the second time in less than a year.

Canada Post has been thrown into a fresh round of turmoil as thousands of workers walked off the job for the second time in less than a year, shortly after the federal government announced sweeping changes to the money-losing operation.

Labour experts on Friday said the union had little choice but to strike again, given that Ottawa made the move during a tense and protracted negotiation between the postal service and its unionized workers.

“The decision to end door-to-door mail delivery and the potential closure of post offices will be very significant in terms of job losses,” said Stephanie Ross, an associate professor of labour s

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