In this thesis, the development of activities in general economic interest was examined. Firstly, the concepts of activities or services of general interest were defined. This is followed by a description of the extent of public services that are indispensable in all social and economic organizations, because they ensure consistent and smooth execution of general activities. Later, the focus was placed on the development of public services ranging from the first primitive types of administrative apparatus to increasingly sophisticated ancient, Roman, and medieval structures. Particular types of such services and their aim were explained as well. The main part public of the thesis focuses on public service in the EU law and its transformation during the increasingly close integration of European nations. With the adoption of the new package of directives in particular Directive 2014/23 / EU the lot has happened in the uniform standards at European Union level and finally arranges the concession granting sphere. At the end, on the regulation of public services in the Republic of Slovenia was highlighted. The main focus was on concessions, public tenders, especially on the limits and value thresholds as well as on the individual parts of the procurement process.