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.

Workers at a Whole Foods Market in Philadelphia voted to form a union, the first time employees of the Amazon-owned grocer have organized in decades. Monday’s vote, which passed 130-100, was prompted by workers’ push for higher wages and improved benefits.