The U.S. Department of Labor has accused Walmart and Amazon of using intimidation tactics in their efforts to replace employees at their retail stores.
In a formal complaint filed Thursday, the department accused Walmart of threatening workers with termination if they refused to participate in union-negotiated contract negotiations.
It also accused Amazon of attempting to intimidate employees by threatening to shut down their stores, as well as threatening to terminate employees who spoke out in support of the workers union.
Walmart and Amazon both have their headquarters in Bentonville, Arkansas, but Walmart has had a contract dispute with the union since 2015.
The complaint comes at a time when Walmart is being sued by the National Labor Relations Board, a federal agency, for allegedly violating labor law by refusing to bargain with employees.
The company and the union have also been fighting over its policies regarding workers’ health and safety.
The department’s complaint said the union’s efforts to reach an agreement with Walmart and the company’s attempts to undermine union bargaining are “part of Walmart’s pattern of retaliatory acts.”
Walmart said it was investigating the complaint.
Amazon did not immediately respond to a request for comment.