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Seattle Labor Law & Litigation Firm
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Terry Costello, a partner, joined the firm in 2001 after more than 20 years working in-house with a major union. His practice focuses on advising union officers and staff in all aspects of leading unions and representing workers. He specializes in private and public sector organizing, contract campaigns, litigation, and contract enforcement. His practice has recently expanded to include representation of a growing number of local unions affiliated with the International Association of Fire Fighters. A graduate of the Seattle University School of Law, he holds a B.A. from Gonzaga University.

Representative Work

  • Successfully defended individual union officers and rank-and-file members from charges of misconduct under the LMRDA
  • Won overtime settlement for fire fighter for time spent in paramedic school
  • Won attorney fees for union in grievance arbitration under RCW 49.48


  • Terry Costello


    tel - 206.285.2828 x6005
    fax - 206.378.4132

    18 West Mercer Street
    Suite 400
    Seattle, WA 98119

    Practice Emphasis
    Union Litigation 
    Advising Unions 
    Union Organizing 
    Union Administration 

    U.S. District Court, W.D. Washington
    U.S. District Court, E.D. Washington
    U.S. Court of Appeals, Ninth Circuit

    J.D., Seattle University School of Law
    B.A., Gonzaga University

    Professional & Civic Engagements
    Executive Committee, Labor & Employment Law Section, Washington State Bar Association

    Professional Honors & Activities