Maine State Nurses Association
- Provides collective bargaining representation to 1,100 nurses in 13 bargaining units.
- http://www.mainenurse.org/

Maine Labor Links
- Maine labor sites with contact, address, and website link information.
- http://www.xpdnc.com/links/lousme.html

National Association Of Letter Carriers Maine Merged Branch 92
- Contains news, union local executive contact information, and other resources for members of the local.
- http://www.nalcbranch92.com

SEIU Local 1989: Maine State Employees Association
- Represents state government workers in Maine.
- http://www.mseaseiu.org/

Maine Education Association
- Union representing teachers in the state of Maine. Affiliated with the National Education Association.
- http://www.maine.nea.org/

IATSE Local 114
- Representing unionized members of the International Alliance of Theatrical and Stage Employees in Portland.
- http://www.ia114.com/