Boeing has filed a complaint with the National Labor Relations Board (NLRB) accusing the International Association of Machinists and Aerospace Workers (IAM) of engaging in unfair labor practices. The dispute centers around Boeing’s decision to move production of its 787 Dreamliner aircraft from Washington state to South Carolina. The IAM, which represents workers at Boeing’s Everett, Washington, facility, argues that the move is retaliation for the union’s past strikes and bargaining positions. Boeing denies this, stating that the decision was based on business reasons.