First Author:   Jens Suedekum University of Konstanz jens.suedekum@uni-konstanz.de   Department of Economics, Box 132 Konstanz, 78467, Germany   +49/7531/883615(Phone) +49/7531/883615(Fax) http://www.uni-konstanz.de/suedekum Second Author: Uwe Blien Institute for Employment Research (IAB) uwe.blien@iab.de