People hold a banner at the Amazon facility as members of a congressional delegation arrive to show their support for workers WHO will vote on whether to unionize, in Bessemer, Alabama, U.S ... The National Labor Relations Board has authorized a new Union election at One of Amazon's Alabama warehouses, the labor Union behind the effort said Monday ... In a statement, the Retail, Wholesale and department store Union said an NLRB director formally granted a new Union election at Amazon's Bessemer, Alabama warehouse.