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Laborers' International Union of North America

Founded in 1903 and headquartered in Washington, DC, the Laborers’ International Union of North America (LIUNA) is the most progressive, aggressive and fastest-growing union of construction workers, and one of the most diverse and effective unions representing public service employees. A half million strong, LIUNA's members are on the forefront of the construction industry – a sector that is a powerhouse of 12 million workers producing five percent of our countries’ economic output.