Legislation ordering postal workers back to work was passed in the House of Commons during a special session that dragged on into the wee hours of Saturday morning.
Today, the Canadian government introduced back-to-work legislation. eBay has been one of the parties pressuring the federal government to act, saying the disruption harms small businesses.
McAlister says the decline in donations puts a strain on the 1.7 million people the charity helps annually.
Mike Palecek, president of CUPW, called it "unconscionable" that a government that professes to champion workers' rights would table this bill.
Earlier in the week the minister had lamented that more than a year of collective bargaining had produced only "limited progress".
He says the last day gift givers could ship something to arrive on December 24 is December 23, but getting parcels in earlier will avoid steep express delivery charges.
"They've shown their true face ... that this government is not a friend of working people", Singh said.
MPs have begun debate on the motion, which will be followed by debate on the bill itself if a resolution is not reached in the labour dispute. The votes of those who walked out were not counted. It was challenged in court and found five years later to be unconstitutional, though Hajdu defends this new bill as taking a different, more "fair and balanced" approach.
"Negotiated agreements are always the best solution", Hajdu told parliament as she unveiled the bill.
In Canada, workers began striking earlier last month after almost a year of negotiations failed to produce agreement.
But two independent senators, Frances Lankin and Diane Griffin, wrote Hajdu to express their concern that the bill may not be constitutional.
The Canadian Union of Postal Workers alerted members of the walkout as of 5 a.m.
Canada Post has said it could take several weeks - even stretching into 2019 - to clear the backlog that has built up, especially at major sorting centres in Toronto, Montreal and Vancouver.
They're seeking pay equity for rural and suburban letter carriers, more health and safety protections and job security.