The International Union of Bricklayers and Allied Craftsworkers (IUBAC) is a labor union representing workers in the masonry and allied crafts industries. Founded in 1865, the union has a long history of advocating for the rights and welfare of its members, including bricklayers, stonemasons, and other skilled tradespeople. The union's mission is to promote fair wages, safe working conditions, and comprehensive benefits for its members while also providing training and apprenticeship programs to ensure a skilled workforce in the construction industry. IUBAC is affiliated with the AFL-CIO and works to strengthen the labor movement through collective bargaining and political action.