The European Union is an association of member states that have transferred part of their sovereignty to European institutions in order to make decisions in the common, European interest. The legal system of the European Union consists of legal rules and general principles. The most important part of law in any country is administrative law. Administrative law regulates the public sector, as well as the relations of organizations and individuals in the private sector. The two main goals of administrative law are the protection of the rights and interests of citizens and the establishment of legal certainty in the public sector. The influence and knowledge of European law is essential for citizens, entrepreneurs, legal entities, practitioners and scientists, because it will directly or indirectly apply to everyone. Administrative law is the broadest part of the legal system of every sovereign state. It penetrates into the most diverse areas of social life, regulating the functioning of the public sector and the relationship between the public community and the individual.