Canada Post is extending its lockout notice to Monday at 12:01 a.m. ET and says it is willing to submit to binding arbitration in an effort to resolve the ongoing labour dispute.

UPDATE: Union ‘politely declines’ arbitration offer

In a statement late Wednesday, the Crown corporation said it was extending its deadline, which had been Friday, in the hopes the Canadian Union of Postal Workers would also agree to binding arbitration.

However, there are no talks planned and Canada Post spokesman Jon Hamilton said earlier Wednesday the two sides couldn’t be further apart.

READ MORE: Canada Post, union have no talks planned as deadline approaches

Canada Post and the union remain at loggerheads on CUPW’s request for wage increases for rural mail carriers and the pension changes Canada Post says it needs to reduce costs.

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The fractious relationship between the Crown corporation and the union, which represents about 50,000 staff at Canada Post, should have come as no surprise to the government.

Public Services Minister Judy Foote was warned three months ago that contract negotiations between Canada Post and CUPW were likely to lead to a strike or lockout, with officials advising the government to avoid taking sides in bargaining.

Foote was told in an April briefing note that negotiations “will likely be long and arduous” and that they “may lead to labour disruptions as has occurred in about half of previous negotiations between parties.”

The briefing material, previously released under the Access to Information Act, suggests that Foote meet with the union, but not talk about contract negotiations that were underway for fear of looking to favour one side over the other.

READ MORE: Canada Post work stoppage: What are the negotiations about anyway?

Officials told Foote she should only meet with the union’s president to talk about a sweeping review of Canada Post that will look at every aspect of the Crown corporation to see what services it should keep, which ones it should ditch, and whether to keep the community mailboxes that have frustrated homeowners who lost door-to-door mail service.

Canadians could lose almost all of Canada Post’s services as of Friday when the corporation plans to suspend the collective agreement.

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Workers would still be on the job and receiving wages and benefits under labour laws, but the contract suspension would give Canada Post the option of triggering a work stoppage by locking out employees.

The union has vowed not to go on strike, creating a stare-down between the two parties with one side waiting for the other to blink.

One business expert says he expects the mail will stop flowing after Friday — it’s just a matter of how long the labour disruption goes on before there’s an agreement, or the government gets involved.

READ MORE: Would you be directly affected by a postal disruption?

Tom Knight, an associate professor in the Sauder School of Business at the University of British Columbia, said it looks like Canada Post is “prepared to pull the trigger on a work stoppage” as neither side is “interested in blinking.”

Already, private courier companies are seeing a bump in business.

A lockout “has the potential to be drawn out because I do believe both sides are quite committed,” said Knight, a labour relations expert.

The sticking points include the union’s proposal for a pay increase for its rural, mostly female carriers. The union says they earn 28 per cent less than their urban, mostly male, counterparts.

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Canada Post has said CUPW’s demands are “not affordable” and would add $1 billion in costs over the life of a new contract just as the postal service undergoes a review of operations.