On Tuesday, workers gave Canada Post 72 hours notice ahead of the strike, which will shut down the company's operations. Canada Post will not deliver mail or parcels and some post offices will be closed for the duration of the strike. Canada Post workers walked off the job after not reaching a negotiated agreement with their employer over wages, expansion of services and worker safety. Worker safety is of particular concern in the North, according to Whitehorse Canadian Union of Postal Workers (CUPW) president, Mac Clohan. Canada Post is asking letter carriers across the country to increase the time they spend walking outside from six to eight hours.