About Us

Questions?

You can contact the IAM Benefit Trust Fund Office or your benefits provider directly to get more information about each plan.

  • Phone: 800-457-3481 (participants) or 202-785-8148 (others). Our phones are open Monday through Friday, 8:30 AM to 4:00 PM Eastern Time.
  • Mail: National IAM Benefit Trust Fund, 99 M Street, SE,  Suite 600, Washington, DC 20003-4595

  • E-mail Form: Click Here

    Vendor Contacts