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.

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

Employees at the Philadelphia store cast 130 votes — or about 57% of the ballots cast — in favor of joining a local chapter of The United Food and Commercial Workers International Union for the purposes of collective bargaining.