Workers at a flagship Whole Foods Market in Philadelphia, Pennsylvania voted to unionize and become the first union in the grocery chain's history.

Workers voted for a union—the first at the Amazon-owned grocery store. But actually negotiating a contract will be a long battle, especially now that Trump has gutted the National Labor Relations Board.

The union win, at a Philadelphia store where workers are seeking higher wages, comes as Amazon is also fighting organizing efforts among some warehouse employees and delivery drivers.