This is the report of the commiittee of Experts on the Application of Conventions and Recommendations (articles 19, 22 and 35 of the Constitution). It is structured in five main parts: Part I. The right to social security in international law Part II. Towards a rights-based approach to social security Part III. Three dimensions of strengthning legality in social security: Extension, enforcement and due process Part IV. Making up the deficit in social security regulation Part V. Normative action and technical cooperation