A view of the UN Secretariat building with flags of UN Member States flying in the foreground.

Secretariat carries out the day-to-day work of the UN as mandated by the General Assembly and the Organization's other main organs. The Secretary-General is the head of the Secretariat, which has tens of thousands of UN staff members working at duty stations all over the world. UN staff members are recruited internationally and locally, and work in duty stations and on . Serving the cause of peace in a violent world is a dangerous occupation. Since the founding of the United Nations, hundreds of brave men and women  in its service.

The Secretariat is organized along departmental lines, with each department or office having a distinct area of action and responsibility. Offices and departments coordinate with each other to ensure cohesion in the UNs programme of work. Much of the UN Secretariat is located in New York City, USA.  The UN also has three major Offices outside of its Headquarters and five Regional Economic Commissions. 




The Secretary-General is the chief administrative officer of the United Nations and head of the UN Secretariat.

Offices and Departments at Headquarters in New York


Offices Outside the Main Headquarters


UN Regional Commissions

Addis Ababa





See also UN System chart