The Office supervises the application of the provisions of Restriction of Competition Act, monitors and analyses situations on the market, conducts procedures and issues decisions in accordance with the Act, submits its opinions to the National Assembly and the Government on general issues under its competence, and in accordance with the Council Regulation on the Implementation of the Rules on Competition laid down in Articles 81 and 82 of the EC Treaty, conducts procedures concerning violations of provisions contained in these two articles.

The Office also assesses alleged restrictive agreements and abuses of a dominant position. Following receipt of a notification, it examines whether a concentration is compatible with the rules on competition, and after the procedure is concluded, it approves, prohibits or conditionally approves the concentration.