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.

The union representing Amazon workers at a warehouse that was shut down last month is calling for a boycott and preparing a legal challenge against the company. "This is not the way we do business in Quebec,