The IARMJ has a General Assembly, a Managing Board and a Supervisory Council. The day-to-day management is conducted by the Management Board, consisting of the President, the Vice-President, the immediate Past President, the Secretary-Treasurer. and the Presidents of the Regional Chapters.
The regional activities are organised within the Chapters. At present the Association has a European Chapter, an Americas Chapter, an Asia Pacific Chapter and since 2005 an Africa Chapter.
The administration of the Association is conducted in the Netherlands, at the Regional court of Haarlem. The day-to-day administration is conducted by the Office Manager Melany Cadogan .