This paper has as main objective to emphasize the importance of a permanent control activity on the economic concentration operations. In order to assure an appropriate choice as concern the economic concentration to be submitted at the assessment procedure each country has its competence to establish its turnover ceilings opening the procedure in accordance with the priorities of its own economic policy. As a final conclusion, we stress that economic concentration assessment and competition policy as a whole are very dynamic activities asking permanent legal and procedural adjustments in order to take appropriately into account economic interests of the country as well as the evolutions registered on regional and global level. This approach is the most valid in the case of Romania taking into account its recent accession to the European Union and its more and more important involvement in the regional and global cooperation.