Mission and Mandate

The General Assembly, in its resolution 48/218B of 29 July 1994, established the Office of Internal Oversight Services (OIOS), to assist the Secretary-General in fulfilling his oversight responsibilities in respect of the resources and staff of the Organization through internal audit, monitoring, inspection, evaluation and investigation services. The Office aims to be an agent of change that promotes responsible administration of resources, a culture of accountability and transparency, and improved programme performance. Each year OIOS issues more than 200 reports, and more than 800 recommendations to improve internal controls and correct underlying obstacles to organizational efficiency and effectiveness.

The Office:


 ·         conducts comprehensive internal audits;

 ·         monitors and evaluates the efficiency and effectiveness of the implementation of programmes and mandates;

 ·         conducts inspections of programmes and organizational units;

 ·         investigates reports of mismanagement and misconduct;

 ·         monitors the implementation of recommendations emanating from audits, evaluations, inspections and investigations.




Mandate Review

Since its establishment in 1994, the Fifth Committee of the General Assembly has regularly reviewed the functions and reporting procedures of OIOS. These reviews in 1999, 2004, 2009, 2014 resulted in resolutions 54/244, 59/272, 64/263, 69/253 and in which the General Assembly reinforced the principles of independence and transparency as prerequisites for effective oversight.  The next review by the General Assembly is scheduled for the 74th session.  Other relevant resolutions and administrative issuances on OIOS. Under its mandate, the Office has established the vision and mission for its work:


A strong and accountable United Nations, fortified by world-class internal oversight.


Delivering objective oversight results that make a difference.