Top 10 Labor Unions


Whether a nurse, teacher, actor, farmer or pilot, workers across the United States join labor unions to help protect their interests, financial livelihoods and retirements. Since the labor unions exploded into America's job force in the late 19th century, government policy and business policy have been molded around the powerful lobbying of labor unions. The nation has many unions, some with just a few thousand members and others with millions.

Communications Workers of America

  • The Communications Workers of America is the largest labor union that represents workers within the field of telecommunications. Workers in broadcasting, publishing and journalism are among the many careers represented by the union. As of 2010, the union counts more than 700,000 workers as part of its family, including more than 500,000 who work in web-based careers.

    Communications Workers of America
    501 3rd St. NW
    Washington, DC 20001


  • The AFL-CIO is a federation of 56 labor unions across the globe. Its unions represent teachers, firefighters, bakers and pilots, just to name a few. More than 11 million workers are protected by the AFL-CIO, as of 2010.

    815 16th St. N.W.
    Washington, DC 20006

American Federation of State, County & Municipal Employees

  • The American Federation of State, County & Municipal Employees (AFSCME) takes care of more than 1 million workers involved in various vital service careers such as sanitation workers, nurses, correction officers and emergency medical technicians.

    American Federation of State, County and Municipal Employees
    1625 L St. N.W.
    Washington, DC 20036

International Association of Machinists & Aerospace Workers

  • This large labor union represents a variety of industrial careers. More than 700,000 million members, as of 2010, have careers in woodworking and the aerospace, automotive and transportation industries.

    The International Association of Machinists and Aerospace Workers
    9000 Machinists Place
    Upper Marlboro, MD 20772

International Brotherhood of Teamsters

  • The Teamsters has more than 1 million current members and also counts more than 500,000 retired members. The union represents more than 21 industrial careers and includes workers in the film industry, dairy workers, delivery workers of UPS and DHL, freight railroad workers and printers.

    International Brotherhood of Teamsters
    25 Louisiana Ave. N.W.
    Washington, DC 20001

Service Employees International Union (SEIU)

  • This large union of service employees counts more than 2 million members as part of its family. The union represents a variety of service careers including building security personnel, nurses, lab technicians, home care workers and public school employees.

    Service Employees International Union
    1800 Massachusetts Ave. NW
    Washington, DC 20036

Transport Workers Union of America

  • The Transport Workers Union represents a variety of workers within the transportation industry such as subway workers, airline workers, bus drivers and railroad workers as well as workers in casinos. The union counts more than 200,000 members from across 22 states, as of 2010.

    Transport Workers Union of America
    1700 Broadway, 2nd Floor
    New York, NY 10019

UAW International

  • The UAW International union represents more than 1 million total workers, both retired and current, as of 2010. Most of the members work in manufacturing jobs and build items including heavy trucks, household appliances, farm equipment, musical instruments and automobiles.

    UAW International
    Solidarity House
    8000 E. Jefferson Ave.
    Detroit, MI 48214


  • UNITE HERE! is a large labor union that represents workers in both Canada and the United States. The people within the union's scope of representation include casino employees, airport terminal workers, textile and clothing manufacturers, and laundry workers. The union counts more than 500,000 workers as part of its membership, as of 2010.

    UNITE HERE Headquarters
    275 7th Ave.
    New York, NY 10001

United Farm Workers

  • Founded in 1966 by the Cesar Chavez, famous for his support of farm worker rights, the United Farm Workers represents workers within the farming, agriculture and dairy sectors. With active membership in 10 states across the country, the UFW represents close to 30,000 workers each year, as of 2010.

    United Farm Workers
    29700 Woodford-Tehachapi Road
    Keene, CA 93531

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