The Secretary-General of WMO is appointed by the World Meteorological Congress for a four-year term with a maximum tenure of 8 years. The Secretary-General is responsible for the overall technical and administrative work of the Secretariat. He manages his role by delegating substantive authority to the Deputy Secretary-General and the Assistant Secretary-General. The Secretary-General has the responsibility to appoint all Secretariat staff, including the Deputy Secretary-General and the Assistant Secretary-General, in accordance with regulations established by Congress, and with the approval of the Executive Council.
The Executive Office comprises the Secretary-General, Deputy Secretary-General and Assistant Secretary-General.