The economic and financial crisis has significant impact on domestic and European law in terms of reforms accompanied with provisions of constitutional nature on strict budgetary conditionality and the adoption of new treaties and European, together with the establishment of new institutional structures to ensure compliance with macroeconomic standard by the member states of the Eurozone. The effects of these reforms are reflected in particular on the maintenance of the state and European model of welfare and on the on the effectiveness of the rights, especially with regard to social rights. The essay reflects on these complex issues about the evolution (and transformation) of the European legal systems, questioning problematically on the enforceability of social rights at both domestic and European level, whose constitutions are based on the recognition of such rights.