Three high-profile labor disputes have unfolded in central Alabama over the past several years, with Amazon warehouse workers, coal miners and autoworkers all speaking out for change.

Volkswagen workers in Chattanooga, Tenn., are voting this week on whether to join the United Auto Workers union. Two previous attempts to unionize the plant failed. Ballots will be counted on Friday.

Autoworkers at Volkswagen's plant in Chattanooga, Tenn., will vote in mid-April on whether to join the United Auto Workers union. Mercedes workers in Tuscaloosa County, Ala., will soon follow.