... The Retail, Wholesale and Department Store Union (RWDSU) filed charges with the National Labor Relations Board (NLRB) claiming Amazon removed union literature from employee break rooms, limited workers' access to the warehouse before and after shifts and forced workers to attend anti-union meetings.

... Amazon in a statement provided by spokesperson Kelly Nantel said it was confident it had fully complied with the law. "Our focus remains on working directly with our team to make Amazon a great place to work," the company said.

... The NLRB sent unionization ballots to workers at the Bessemer, Alabama, plant earlier this month and will tally the votes at the end of March.