This thesis addresses the freedom of movement of workers within the European Union (hereinafter: the EU) as one of the fundamental market freedoms in attaining the goals of EU integration. Market freedoms include freedom of movement of goods, people, capital, and services as subsidiary market freedoms. EU citizenship is mentioned in literature as a fifth market freedom, which creates confusion, because market freedoms are listed in the Treaty on the Functioning of the European Union. As subjective rights arise from those, depending on the factual situation of an individual case, the relationship between the fundamental freedoms and rights can act in the manner of reverse restrictions. Despite the many benefits in realizing the imperative of the internal market in the countries of origin and the receiving countries, implementation of the freedom of movement of workers is also in contrast to the negative trend of social policy in relation to the member states, as well as to the low percentage of labor force mobility. The main structure of the legal basis is based on Articles 45-48 of the Treaty on the Functioning of the European Union , Regulation 492/2011 on freedom of movement for workers, Directive 2014/54/EU on freedom of movement of workers, and Directive 2004/38/EC on the right of citizens of the Union and their family members to free movement and residence in the territory of the member states. In the analysis of the freedom of movement of workers, judgments made by the European Court are of particular importance as a source of European law that displays the influence of its practice on the direction and effect of the impact of legal norms in the understanding of rights and justified limitations in the exercising of those rights.