Workers at a Whole Foods Market in Pennsylvania voted to unionize on Monday, becoming the first group of employees to pull off a labor win at the Amazon-owned grocery store chain. 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.

Workers at a Whole Foods Market in Philly have voted to unionize, becoming the first group of employees to pull off a labor win at the chain.

The union win comes as Amazon, which owns the grocery chain, is also fighting labor organizing in its warehouse and delivery businesses.