Plumbers and Pipe Fitters Local Union 286
- Offers career opportunities and training in aspects of the plumbing and pipefitting industry. Includes membership and apprenticeship information.
- http://www.local286.org/

NTEU Chapter 72
- Includes volunteer and membership forms, legislative updates, and a members area. Affiliated with the National Treasury Employees Union.
- http://www.nteu72.org/

IBEW Local 520
- Includes a contractor directory, training information, wage calculator, calendar of events, forum, and job opportunities. Affiliated with the International Brotherhood of Electrical Workers.
- http://www.ibew520.org/

APWU Local 299
- Includes a calendar of events, meeting minutes, contact information for board members, and information about health and dental plans. Affiliated with the American Postal Workers Union.
- http://www.apwuaustin.org/

AFM Local 433
- Includes dues information, a list of officers, and information about their jurisdiction. Affiliated with the American Federation of Musicians.
- http://www.afm.org/433/