LIUNA — Laborers’ International Union of North America—is the most progressive and aggressive union of construction workers and one of the most diverse and effective unions representing public service employees. LIUNA’s half-million members build America and build Canada. They are on the forefront of the construction industry, a powerhouse of 12 million workers, producing 5 percent of our countries’ economic output. Members are united through collective bargaining agreements, which help create jobs with family-supporting pay, good benefits, the opportunity for advancement and better lives.