UN Secretariat Campus - NY
UN Secretariat Campus - NY
UNHQ HVAC Shop
UNHQ HVAC Shop
Accountability and Transparency
Accountability and Transparency
Environmental Management
Environmental Management
Technology and Innovation
Technology and Innovation
Supply Chain Management
Supply Chain Management
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Slide02 - DOS
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WHO WE ARE

Department of Operational Support graphic
Department of Operational Support graphic

The Department of Operational Support (DOS) provides operational support to all UN Secretariat entities, including advisory, operational and transactional support services and, where needed, exercises delegated authority on behalf of clients. DOS supports the entire UN Secretariat, consisting of almost 100 entities located around the globe.

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ORGANIZATIONAL STRUCTURE

The Department of Operational Support is based on five pillars - three offices and two divisions - in addition to the Office of the Under-Secretary-General. Approximately 1200 civilian staff work in UN Operational Support at the UN Headquarters, supporting operations globally.

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DOS LEADERSHIP

The Department of Operational Support is currently led by Under-Secretary-General Mr. Atul Khare. The Department has two Assistant-Secretaries General: Ms. Lisa M. Buttenheim for Support Operations and Mr. Bernardo Mariano Jr. for Information and Communications Technology; and one Acting Assistant-Secretary General: Ms. AnneMarie van den Berg for Supply Chain Management. All had long senior careers with the United Nations and bring to their positions vast operational, political and diplomatic experience.

Find out more about DOS leadership