Given the nature of its mandate, JIU acted as an early promotor of strong oversight frameworks and functions across the United Nations system. Its system-wide mandate provides the Unit with a unique opportunity to review cross-cutting issues, such as oversight, and to be an agent for promoting reform in governing bodies.

Over the years, the Unit has produced a series of reports reviewing oversight functions which have contributed to a better comparative analysis of the strengths and weaknesses of these functions as they were implemented in the United Nations system.