Workers at Philadelphia's Center City Whole Foods store voted on Monday to unionize, becoming the first local store in the chain owned by Amazon to formally organize under the United Food and Commercial Workers.

A majority of workers at a flagship Whole Foods store in Philadelphia, Pennsylvania voted to unionize on Monday, becoming the first in the Amazon-owned grocery chain to snatch a labor victory.

Whole Foods workers in Philadelphia became the first group to unionize under the grocery store chain. The vote came months after it filed to hold a union election in November.