Prof. Christos Bagavos is Associate Professor of Demography at the Department of Social Policy at Panteion University. He holds a PhD in Economics (field Demography Economics) from the Institute of Political Sciences of Paris. His research work is fully aligned with the requirements of the SIRIUS project as he has conducted studies and research on socio-economic and policy issues of demographic developments, international migration, social services and health issues. Moreover, he evaluates and assesses proposals and projects for the European Commission (DG Research and DG Employment Social Affairs and Inclusion) the Greek General Secretariat for Research and Technology, the Greek Social and Economic Committee, and the Greek Statistical Authority. He used to work as consultant for the European Commission.