👉 Empalement is a type of labor union that represents workers in a particular industry. It was created by the International Association of Machinists and Aerospace Workers (IAM) in 1923, to represent the interests of workers in the aerospace industry. The IAM union has since become one of the largest unions in the United States, with over 450,000 members across all industries. Empalement is a collective bargaining process that allows workers to negotiate terms and conditions