Canada Post employees, represented by the Canadian Union of Postal Workers (CUPW), are initiating rotating strikes as the holiday delivery season approaches, which could lead to significant disruptions for shippers not prepared for these actions. The strikes, which began on October 11, impact mail and parcel deliveries in various Ontario communities, and employees are also halting the processing of unaddressed advertising mail in Ontario and Quebec. While the rotating strikes are expected to be less disruptive than previous national strikes, businesses are advised to communicate potential delays to customers and consider alternative carriers like UPS and FedEx to mitigate service impacts.

Source: https://www.supplychaindive.com/news/canada-post-strike-holiday-delays-shipper-guide/804664/