The subject of social security contributions is not fully studied taking into account its importance, so the main objective of this research is to analyze the impact they have on the labor market. Through this research it is intended to respond if social security contributions have an influence on the decrease of labor demand, as well as on the labor supply. The research methodology involves the use of descriptive and comparative methods of the current situation, at the level of seven countries within the European Union, during 2007-2017. Then they will be followed by the analysis of the relationship between the contributions and the employment rate, respectively the unemployment rate. With SPSS software, backward method, it has been concluded that there is a positive correlation between total social security contributions and the unemployment rate, as well as a negative relationship between total social security contributions and the employment rate.