The International Union of Operating Engineers (IUOE) is a diverse trade union representing workers who primarily operate and maintain heavy equipment and stationary engines. Founded in 1896, it is one of the oldest trade unions in North America. IUOE members work across various sectors of the construction industry and beyond. In construction, operating engineers operate heavy machinery such as cranes, excavators, bulldozers, and graders. They are crucial to major infrastructure projects, including road construction, bridge building, and large-scale earthmoving operations. The union also represents stationary engineers who operate and maintain systems that provide heat, air conditioning, ventilation, and power in large buildings. These skilled technicians work in facilities like hospitals, schools, office buildings, and industrial plants. IUOE's scope extends to other specialized areas. Some members work as mechanics, repairing and maintaining the heavy equipment used in construction. Others operate pipeline equipment or work in the energy sector, including in oil refineries and power plants. The union places a strong emphasis on training and apprenticeship programs, ensuring its members are skilled in operating increasingly complex and technologically advanced machinery. This includes training on computerized systems and GPS-guided equipment now common in modern construction. IUOE advocates for fair wages, workplace safety, and comprehensive benefits for its members across the United States and Canada. The union plays a vital role in ensuring the safe and efficient operation of heavy equipment and building systems across various industries.