Article 60 Chicago Convention
Immunities and privileges of personnel
Each contracting State undertakes, so far as possible under its constitutional procedure, to accord to the President of the Council, the Secretary General, and the other personnel of the Organization, the immunities and privileges which are accorded to corresponding personnel of other public international organizations. If a general international agreement on the immunities and privileges of international civil servants is arrived at, the immunities and privileges accorded to the President, the Secretary General, and the other personnel of the Organization shall be the immunities and privileges accorded under that general international agreement.
See also: Article 59 Chicago Convention
