This report was undertaken at the request of the Greek Ministry of Labour, Social Security and Welfare, in order to provide them with advice and recommendations on reforming Greek social programmes. The OECD was asked to provide a well-founded analytical perspective of the current situation, including the development of a database, in order to help the Greek government define reforms to improve the effectiveness, efficiency and fairness of selected social programmes. The aim was to identify gaps and overlaps in social protection, and highlight areas where there was room for significant efficiency gains. This was requested in order to support informed and concrete decisions by the Greek government on where budgetary savings could most appropriately be made, taking into account the balance between societal groups and the need to maintain social cohesion. The analysis builds extensively on the database constructed by the OECD on the basis of administrative data collected from the Greek authorities