The Office Congolais de Contrôle (OCC), established by Ordinance No. 74-013 of 10 January 1974, is a technical and commercial public institution with corporate status, operating under the supervision of the Ministry of Trade.

The OCC is in charge of performing quality, quantity and conformity inspection of all goods, analyses of all samples and goods, and technical inspection of all equipment and works. It may also manage and operate silos, warehouses and bonded warehouses. Moreover, it may perform any activities directly or indirectly related to its legal activity, except purchasing for resale.

The Office is directed by a Director General, possibly assisted by an Assistant Delegate General. They are appointed by the President of the Republic.

The status of the Office is set out in Ordinance No. 78-219 of 5 May 1978.

The Office is also the national metrology, standardization and certification body and is responsible for consumer protection, which it promotes by fostering interaction between consumers and producers according to Congo legislation.