The IBB and UWUA have much in common. We’re both diverse organizations that play a vital role in building and maintaining our society’s infrastructure. We both believe that safety is the number-one priority on any job. We both want the best training, health and welfare programs and pension programs for our members.

We also face many of the same challenges. It only makes sense to take advantage of one another’s strengths, experience and knowledge.


International Brotherhood of Boilermakers

The International Brotherhood of Boilermakers, Iron Ship Builders, Blacksmiths, Forgers & Helpers (IBB), AFL-CIO, CLC, is a diverse union representing workers throughout the United States and Canada who are employed in industrial construction, maintenance and repair; ship building; manufacturing; railroads; cement; mining and related industries.

  • Membership: Approx. 50,000
  • Location: United States and Canada
  • Established: 1880
  • Headquarters:
    753 State Street, Suite 555
    Kansas City, Kansas 66101

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IBB Industries and Divisions

Utility Workers

Utility Workers Union of America

The Utility Workers Union of America (UWUA), AFL-CIO represents 50,000 active members employed in the energy, electric, gas, steam, water, generation, and related professional, technical and service industries. The UWUA was chartered in August 1945 to replace the former Utility Workers Organizing Committee, the CIO union for utility workers.

  • Membership: Approx. 50,000
  • Location: United States
  • Established: 1945
  • Headquarters:
    1300 L Street, NW, Ste. 1200
    Washington, DC 20005
    (202) 899-2851

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UWUA Sectors