The social state is a historical type of state that has deepened and broadened the social aspect of liberal states, and its effectiveness and depth depend on constitutional regulation and the values and principles of economic strategy. Thus, since the 2008 financial crisis, the EU has intensified the presence and relevance of social objectives in its economic strategy, presenting them as necessary for the economic and political success of the European project. Among the lessons learned, the change in the fiscal paradigm and the mobilization of instruments to correct inequalities stand out, although greater coordination of the Member States is needed. In this regard, the strengthening of social governance and the implementation of the European Pillar of Social Rights and the reform of the European Semester are proposed. When it comes to measurement, in the last 30 years some indexes have been created to measure well-being, human development, happiness and quality of life of people, and a measurement of social justice has been proposed based on poverty prevention, access to education and labor market, social inclusion and non-discrimination, health and intergenerational justice. Chile joined this measurement in 2019 and has margin for improvement in some dimensions. These data can help to support adequate legislation and good government action, in view of a future constitutional reform in the country.