We are affiliated with:
- International Union of Operating Engineers
- Ozaukee County Trades and Labor
- Milwaukee County Labor Council
- Racine Labor Council
- Kenosha Labor Council
- Wisconsin State AFL-CIO
- Wisconsin State Branch of the I.U.O.E.
- North Central States Conference of the I.U.O.E.
- Utility Workers Coalition
- Company sponsor of Milwaukee Chapter of the National Association of Power Engineers.
- Registered with Helmets to Hardhats.
Fine employers with whom Local 420 has labor agreements: