 Walmart has been criticized for its policies against labor unions.Critics blame workers' reluctance to join the labor union on Walmart anti-union tactics such as managerial surveillance and pre-emptive closures of stores or departments who choose to unionize.Walmart states that it is not anti-union but "pro-associate," arguing that its employees do not need to pay third parties to discuss problems with management as the company's open-door policy enables employees to lodge complaints and submit suggestions all the way up the corporate ladder.