30 Most Powerful Unions in America

25. International Alliance of Theatrical Stage Employees (IATSE)

Total membership: 145,525
Description: Entertainment (theater, motion picture and television production, trade shows, television broadcasting and concerts)
Member of the AFL-CIO? Yes

20. Screen Actors Guild-American Federation of Television and Radio Artists (SAG-AFTRA)

Total membership: 243,853
Description: Actors, recording artists and broadcasters
Member of the AFL-CIO? Yes

Source: 30 Most Powerful Unions in America