- American Postal Workers Union
- Boilermakers Union
- Carpenters Union Local
- Glaziers Trust Fund Office
- Hawaii Building & Construction
- Hawaii Laborer's & Employers
- Inlandboatmens' Union-Pacific
- Laborers International Union
- Public Employees Mgmt Assn-Hi
- Roofers' Union Local 221
- Sheetmetal Workers Admin Ofc
- Tapers Local Union
- United Public Workers Local
