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

Whole Foods workers at the Spring Garden store have expressed frustration about low pay and want better health-care benefits.

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.

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

The Amazon-owned grocery store brand says it's 'disappointed' in the employees' plan to join the United Food and Commercial Workers union.

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

Whole Foods employees at a Philadelphia store voted to form a union Monday night, marking the first successful organizing campaign at the Amazon-owned upscale grocery. TakeAway Points: Philadelphia Whole Foods employees decided to become members of the United Food and Commercial Workers union.