What we investigate

United Nations flag flies from a pole in front of UN Headquarters in New YorkUN Photo/John Isaac | United Nations flag

Within our investigation capacity, we collect facts pertaining to misconduct of UN staff under OIOS’ authorities. Misconducts range in nature. For instance, they cover:

  • Fraud and Corruption (for example, misrepresentation, forgery, or false certification in connection with any official claim or benefit, theft, embezzlement, solicitation/acceptance of bribes, extortion, and/or smuggling). For more information see the United Nations Secretariat Information Circular on Anti-Fraud and Anti-Corruption for mishandling of contract obligations and relations with third parties leading to loss of property or assets, or generating liabilities for the Organization
  • Conflict of Interest, such as failure to disclose an interest or relationship with a third party who might benefit from a decision in which the staff member takes part
  • Allegations of sexual abuse and sexual exploitation as defined in ST/SGB/2003/13
  • Allegations of sexual harassment as defined in ST/SGB/2019/8
  • Unauthorized outside activities, procurement violations, misuse of ICT resources, misuse of funding to implementing partners, and other violations of UN regulations, rules and administrative issuances


Investigations hotline

To provide confidential reports of waste, fraud, mismanagement or other wrongdoing in the United Nations, please contact OIOS:

Submit online reporting form:




Call  hotline at :

 + 1 212 963 1111 (24 hours a day)

Regular mail to:

     Director, Investigations Division
     Office of Internal Oversight Services
     1 United Nations Plaza, 9th Floor
     New York, NY 10017, U.S.A

OIOS investigates misconduct allegations that involve personnel and entities within the United Nations Secretariat, including field missions.

Read more