Social risk, fairness types, and redistribution / Stefania Bortolotti (University of Bologna and IZA), Felix Kölle (University of Cologne), Ivan Soraperra (Max Planck Institute for Human Development and Center for Human and Machine, Berlin), Matthias Sutter (Max Planck Institute for Research on Collective Goods, Bonn, University of Cologne, University of Innsbruck and IZA) ; IZA Institute of Labor Economics