Applications should be sent to the NMB at ADR@nmb.gov or the mailing address below. Email is the preferred method for such transmission.
ADR Services
National Mediation Board
445 12th Street, SW
Suite 2500
Washington, DC 20024
The NMB is in the process of updating its Application form to include its new office address information, and will post the updated form once it is available. The address shown on the current form is no longer valid.