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.

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

Whole Foods CEO Jason Buechel has taken on an expanded role at Amazon and will now lead the Worldwide Grocery Stores (WWGS) division.

A majority of workers at a Whole Foods Market in Philadelphia voted in favor of joining the United Food and Commercial Workers International union, presenting a new foothold for organized labor within parent-company Amazon.

Amazon named Jason Buechel, who currently serves as CEO of Whole Foods, to oversee its larger worldwide grocery business.

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

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,

Jason Buechel will expand his role to oversee Amazon’s Worldwide Grocery Stores business, including Amazon Go convenience stores and Amazon Fresh physical and online stores, while also continuing to serve as Whole Foods Market CEO.