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National Labor Organizations
Organizations with Membership Over 100,000
| Members
|
Union1
|
| 2,731,419
|
National Education Associationof the United States2
|
| 1,505,100
|
Service Employees International Union3
|
| 1,459,511
|
American Federation of State, County, and Municipal Employees
|
| 1,396,174
|
International Brotherhood ofTeamsters3
|
| 1,311,548
|
United Food and Commercial Workers International Union
|
| 828,512
|
American Federation of Teachers
|
| 754,978
|
United Steelworkers of America
|
| 704,794
|
International Brotherhood of Electrical Workers
|
| 669,772
|
Laborers' International Union of North America
|
| 653,781
|
International Association of Machinists and Aerospace Workers
|
| 557,099
|
International Union, United Automobile, Aerospace, and Agricultural Implement Workers of America
|
| 545,638
|
Communications Workers of America
|
| 522,416
|
United Brotherhood of Carpenters and Joiners of America2
|
| 455,346
|
Union of Needletrades, Industrial, and Textile Employees
|
| 424,579
|
Longshore and Warehouse Union
|
| 392,584
|
International Union of Operating Engineers
|
| 361,362
|
Maritime Trades
|
| 324,043
|
United Association of Journeymen and Apprentices of the Plumbing and Pipe-Fitting Industry of the U.S. and Canada
|
| 292,221
|
National Association of Letter Carriers
|
| 286,700
|
American Postal Workers Union
|
| 271,463
|
International Association of Fire Fighters
|
| 269,204
|
National Postal Mail Handlers Union
|
| 245,011
|
Paper, Allied-Industrial, and Chemical International Union
|
| 226,975
|
American Federation of Government Employees
|
| 180,598
|
Amalgamated Transit Union
|
| 152,294
|
American Nurses Association2
|
| 148,806
|
Sheet Metal Workers International Association
|
| 127,278
|
International Brotherhood of Painters and Allied Trades
|
| 125,437
|
International Association of Bridge, Structural, Ornamental, and Reinforcing Iron Workers
|
| 125,398
|
Transport Workers Union of America
|
| 125,000
|
Building and Construction Trades
|
| 111,851
|
American Association of Classified School Employees2
|
| 105,460
|
The National Rural Letter Carriers' Association2
|
|
1. Unless otherwise noted, unions are AFL-CIO affiliated.
2. Not AFL-CIO affiliated.
3. Severed ties with the AFL-CIO in July 2005.
Source: U.S. Department of Labor.
Provided by Infoplease—an authoritative, comprehensive reference website that offers an encyclopedia, a dictionary, an atlas, and several almanacs. Visit Infoplease.com to find more resources endorsed by teachers and librarians.
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