A banner encouraging workers to vote in labor balloting is shown at an Amazon warehouse in Bessemer, Ala., on Tuesday, March 30, 2021. Organizers are pushing for some 6,000 Amazon workers to join the Retail, Wholesale and Department Store Union on the promise it will lead to better working conditions, better pay and more respect. Amazon is pushing back, arguing that it already offers more than twice the minimum wage in Alabama and workers get such benefits as health care, vision and dental insurance without paying union dues. (AP Photo/Jay Reeves)

FILE- This Feb. 9, 2021 photo file photo, a car enters an Amazon facility where labor is trying to organize workers in Bessemer, Ala. Organizers are pushing for some 6,000 Amazon workers to join the Retail, Wholesale and Department Store Union on the promise it will lead to better working conditions, better pay and more respect. Amazon is pushing back, arguing that it already offers more than twice the minimum wage in Alabama and workers get such benefits as health care, vision and dental insurance without paying union dues. (AP Photo/Jay Reeves, File)

An Amazon warehouse that labor is trying to organize is shown in Bessemer, Ala., Tuesday, March 30, 2021. Union representatives are pushing for some 6,000 Amazon workers to join the Retail, Wholesale and Department Store Union on the promise it will lead to better working conditions, better pay and more respect. Amazon is pushing back, arguing that it already offers more than twice the minimum wage in Alabama and workers get such benefits as health care, vision and dental insurance without paying union dues. (AP Photo/Jay Reeves)