Contact Us

Arne Hoel, The World Bank

CAO is committed to keeping all stakeholders informed about its work. Whether you wish to file a complaint, request more information, or meet with us, we want to hear from you.

Contact us

Office of the Compliance Advisor Ombudsman (CAO)

2121 Pennsylvania Avenue, NW

Washington, DC 20433, USA

Tel: + 1 202 458 1973

Fax: + 1 202 522 7400



NOTE: All CAO staff member emails changed to effective November 22, 2014.


Media & public enquiries:

Emily Horgan: ehorgan at

Communications and Outreach Specialist

T: + 1 202 473 8353

Filing a complaint:

Complaints should be submitted:

  • in writing
  • in any language
  • by e-mail, fax, mail/post, courier, or delivered to the Office of the CAO in Washington, DC

Supporting material is not required. If you do submit supporting material, CAO will not release it without your consent.

CAO will keep the identify of complainants confidential if requested, but anonymous complaints will not be accepted.


If you are affected by a project supported by the International Bank for Reconstruction and Development (IBRD) or International Development Association (IDA), please contact the
World Bank Inspection Panel