Sprinkler Fitters Local 281, UA
- Features news, events, training, links, and officials. Local union of the United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada.
- http://www.sprinklerfitterchicago.org/

IUOE Local 399
- International Union of Operating Engineers in Chicago. Features reports, 401k information, events calendar and support services.
- http://www.iuoe399.org/

Chicago Jobs With Justice
- SEIU led campaign fighting to organise low-paid workers, particularly in the janitorial sector.
- http://www.chicagojwj.org/

Chicago Federation of Labor
- The central labor body for over 300 Chicago area unions affiliated with the AFL-CIO (American Federation of Labor - Congress of Industrial Organizations. The membership of these unions exceeds 500,000. Site includes local labor news, links, and real audio
- http://www.cflonline.org/