Amazon.com Inc.’s Whole Foods Market chief has been tapped to run the retail giant’s entire grocery business. Jason Buechel will become the vice president of worldwide grocery stores, Amazon retail chief Doug Herrington said in a note to employees,

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.

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.

In his expanded role, Buechel will oversee Amazon's roster of grocers, including Whole Foods, Amazon Fresh, Amazon Go and other grocery partnerships, as the division looks for ways to boost revenue. He will keep his role as CEO of Austin-based Whole Foods.

The union's election win, which workers called "historic," tees up another organizing battle inside Amazon's workforce.

Jason Buechel, who will remain the head of the specialty banner, steps into a newly created role in which he will also oversee the Amazon Fresh and Amazon Go chains.

Worldwide Amazon Stores CEO Doug Herrington has revealed that Whole Foods Market (WFM) CEO Jason Buechel will take on an expanded responsibility. Buechel has been named VP of Worldwide Grocery Stores (WWGS) while maintaining his current role at Whole Foods.

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.

Employees vote to organize under UFCW as the store becomes the only union-represented Whole Foods location.

SEATTLE — Amazon has tapped Whole Foods Market chief executive officer Jason Buechel to oversee its grocery business as vice president of Amazon Worldwide Grocery Stores.