Amazon.com Inc.’s decision to close all seven of its warehouses in the Canadian province of Quebec and terminate more than 1,900 workers is prompting legal action from the affected union.

A union that represents some Montreal Amazon workers said it will petition a court to compel the company to reopen the warehouses and reverse the job cuts.

In addition to the roughly 2,000 employees laid off by Amazon after the company announced it would be closing its Quebec warehouses, more than 2,500 other people employed by smaller carriers subcontracted by the company have also lost their jobs.