Effects of welfare sanctions in couple households / Gerard J. van den Berg (University of Groningen, University Medical Center Groningen, IFAU Uppsala, IAB Nuremberg, ZEW Mannheim and IZA), Arne Uhlendorff (CREST, CNRS, IP Paris, IAB Nuremberg and IZA), Markus Wolf (IAB Nuremberg), Joachim Wolff (IAB Nuremberg, Labor and Socio-Economic Research Center Nuremberg and GLO) ; IZA Institute of Labor Economics