First Author:   Christian Hutter Institute for Employment Research (IAB) christian.hutter@iab.de   Regensburger Str. 100 Nuremberg, 90478, Germany   +499111793057(Phone) +499111793057(Fax) Second Author: Enzo Weber Institute for Employment Research (IAB) enzo.weber@iab.de   Regensburger Str. 100 Nuremberg, 90478, Germany