A recent survey revealed that 93% of our signatory contractors view UA Local 400 as an asset to their business. This results from the strong working relationship between union members and firms that hire them which has become a trademark of our organization. Plumbers & Steamfitters UA Local 400 is comprised of approximately 2,300 members serving eighteen counties in Northeast Wisconsin. We are a local union that is affiliated with the United Association of Plumbers & Pipefitters, comprised of approximately 355,000 members across the US and Canada.

UA Local 400 has over 100 signatory contractors both independently and collectively through the Mechanical Contractors Association of North Central Wisconsin. If you're a mechanical contractor or pipe fabrication shop owner interested in learning more about partnering with UA Local 400, we encourage you to visit our New Business Portal and contact Business Manager, Trevor Martin at 920-462-0406.

A huge THANK YOU to Local 400 for helping our family stay warm this Christmas! I am humbled by all of your help and deeply deeply greatful for your.

I worked out of this local on three different occasions, and I was never treated better at home in Local 43. My gratitude and congratulations.

I just went to say hi, I'm from local 598 in Pasco Wa. I was treated very nice. This is a great group of brothers and sisters!

What's new?

📣 #ANNOUNCING The United Association has generously become a Platinum partner of the International Association of Plumbing and Mechanical Officials International Water, Sanitation and Hygiene Foundation (IWSH) for 2021! The new partnership follows increasing support and participation in...

Posted on Mar 09, 2021  •  Facebook

Help Business Agent Travis Martin raise money for the CP Telethon! He's on the clock and ready to take your call!

Posted on Mar 08, 2021  •  Facebook

The CP Telethon is this weekend! Here is a link to donate online if you are interested in helping Local 400 support this organization.

Posted on Mar 05, 2021  •  Facebook

If you’re thinking about an apprenticeship in the trades after graduation, tune in to hear Kyle and Tanner share why they joined the UA 400 Youth Apprentice Program and plan to pursue careers in pipefitting and plumbing. #UAcareer #UAproud #JoinUA400 #trades #youthapprentice #plumber #pipefittter #CTEmonth

Posted on Feb 25, 2021  •  Facebook

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