Amazon has announced plans to close all of its Quebec facilities, laying off 1,700 permanent employees, months after workers in Laval, Que., made history by unionizing. Experts say the move could prompt legal challenges under Quebec labour laws.

Canada has warned Amazon.com that it is reviewing business ties with the company’s cloud-computing unit following Amazon’s decision to shut down its warehouses in Quebec, leading to the layoff of 1,700 workers.

Amazon.com Inc. will shut down all warehouses and lay off employees in the French-speaking Canadian province of Quebec. The decision comes less than a year after workers at one of those facilities unionized.