Canada Post says Canadians can expect delays of parcel and mail delivery into 2019 as a result of rotating strikes by its employees.
And it says the worst delays will likely be in southern and southwestern Ontario because of a backlog of hundreds of transport trailers sitting idle at its main Toronto sorting facility.
The Crown corporation has told its commercial customers that it cannot honour its delivery standards for any product because of the prolonged strikes.
The walkouts have created massive backlogs of mail and parcels just days before an expected rush of millions more parcels from Black Friday and Cyber Monday online sales.
WATCH: Has the rotating Canada Post strikes put the holiday shopping season in jeopardy?
Prime Minister Justin Trudeau today repeated his call for both sides in the dispute to resolve their differences soon.
But he gave no indications that his government is prepared to force postal workers back to their jobs yet, saying only that he wants a deal, and that the government is considering what it can do to put an end to the labour dispute.