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 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.

Whole Foods said it was "disappointed" by the vote but "committed to maintaining a positive working environment"

The vote marks the first successful organizing effort at Whole Foods since Amazon acquired the grocer for $13.7 billion in 2017.

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.

Austin-based Whole Foods, which is owned by Amazon, is the latest grocery chain to contend with unionization after workers in Philly voted in favor.

Workers voted 130-100 for union representation at the Center City in Philadelphia, according to the National Labor Relations Board.

Workers at a Pennsylvania Whole Foods store voted on Monday to unionize, forming the first union in the organic grocery chain owned by Amazon.

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.

The grocery chain’s store in Philadelphia becomes the first to join a union, where workers hope to expand organizing to other outlets and across the Amazon empire.

The number of Americans filing for jobless benefits fell to 207,000 last week in a sign the labor market remains strong.