Amazon has aggressively opposed efforts and is challenging the federal labor watchdog that ruled against its actions

Workers at a Whole Foods store in Philadelphia, Pennsylvania, have filed to hold a union election, the first union filing at the supermarket chain since Amazon acquired it in 2017.

The union drive comes as Amazon has aggressively opposed unionization efforts and is challenging the constitutionality of the National Labor Relations Board (NLRB), the federal labor watchdog that has ruled against the company’s anti-union actions.