The author deals with the issue of constitutional protection of the right to social scurity in the Republic of Serbia. In this connection, the author first analyzes the provisions of the current Constitution of the Republic of Serbia which prescribing the right to social security. Subsequently, the scope of the material and personal rights of social security, which are guaranteed by the Constitution of the Republic of Serbia, are presented in the paper. Through analysis of two decisions of the Constitutional Court regarding the constitutionality of the provisions of individual laws pertaining to the exercise of these rights is presented impact of the constitutional regulations on the content of the social security rights in the legal system...