Under Article 15 of the Statute of the Administrative Tribunal, the jurisdiction of the Tribunal may be extended to cover disputes between bodies attached to the Council of Europe and other international governmental organisations and their respective officials, at the request of the body or organisation concerned and after the conclusion of an agreement between the latter and the Secretary General.
 

To date, agreements have been concluded with:

• the Council of Europe Development Bank (CEB)
• the Central Commission for the Navigation of the Rhine (CCNR)
• the Hague Conference on Private International Law (HCCH)
• the Intergovernmental Organisation for International Carriage by Rail (OTIF)