The status of the law of the European Union has a significant meaning in the legal systems of the member states. The main tasks of this article are to understand the way the law of the European Union is being implemented and used on the territory of member states and to determine which of the “levels” of the law will have the priority in case of the conflict between the legal norms of the European Union and the national law In the article there is explained the difference between legal systems of member states what leads to the different status of the law of the European Union in these countries. Further on the author points out major principles in this sphere: direct action and supremacy, which were produced by the European Court. These tw...