1. Department of Social and Political Science, University of Milan, Milan, Italy
2. Institut national d'études démographiques (INED), Paris, France
3. Labour and Public Economics Unit, Paris School of Economics, Paris, France
4. Sciences Po, CRIS, CNRS, Paris, France
5. Economic and Social Research Institute, Dublin, Ireland
6. UCL Social Research Institute, University College London, London, UK
7. Department of People Management and Organisation, Universitat Ramon Llull, Esade Business School, Barcelona, Spain