Royal assent is expected soon, allowing the legislation to go into force at noon Tuesday.
Canada Post says the costs of the wage adjustments, increases in pension pay and other benefits will amount to $550 million by the end of the year, with $130 million already recorded by the end of 2017.
"Our collective rights, our charter rights have been under attack", said Canada Post worker Megan Whitfield.
When taking into account its other operations like Purolator, Canada Post says it had a net loss of $36 million in the 13-week period ended September 29, compared with a loss of $13 million for the same period a year earlier.
The arbitrator's decision was a hangover from the last round of contract negotiations between CUPW and Canada Post.
Negotiations have been underway for almost a year, but the dispute escalated more recently when Canadian Union of Postal Workers members launched rotating strikes October 22.
Canada Post anticipates delays for worldwide packages will stretch into March of 2019, due to screening they must undergo by the Canada Border Services Agency. They're more likely to be female, and historically have been paid less, than their urban counterparts.
The previous Conservative government forced an end to a lockout of postal workers during a 2011 dispute by enacting back-to-work legislation, which was later declared by a court to be unconstitutional. "There was a significant, growing economic harm to the country, small businesses were struggling, rural and remote communities were struggling. They were at a complete impasse".
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Mkhitaryan is also back in Ukraine, where he spent three seasons with Shakhtar Donetsk before joining Borussia Dortmund in 2013. We had a long trip but for us, it doesn't matter about where we play.
Senators voted 53-25 in favor of the bill, with four abstentions, after two days of special sittings to debate the matter.
"Our fight is with Canada Post and the government, not the public" said CUPW Nova Local President Tony Rogers.
"Postal workers will not accept another violation of our right to free collective bargaining", Palecek said in a statement on the union's website.
"We can no longer take strike action without the risk of hefty fines and legal action", Murray said.
"We're pretty disappointed, especially with being legislated back to work".
She also said it appoints an mediator-arbitrator to be chosen either through the consensus of the two parties or in an independent way through advice given to her.
Employment Minister Patty Hajdu said in a statement last week that should Canada Post and the union fail to reach an agreement within a few days, the government would issue back-to-work legislation.
"I thought the extra time we took was valuable and was a demonstration of how the Senate should be reviewing government bills", said Sen.