First Author:   Michael Oberfichtner University of Erlangen–Nürnberg, Chair of Labour and Regional Economics michael.oberfichtner@wiso.uni-erlangen.de         Second Author: Boris Hirsch University of Erlangen–Nürnberg, Chair of Labour and Regional Economics boris.hirsch@wiso.uni-erlangen.de         Third Author: Claus Schnabel University of Erlangen–Nürnberg, Chair of Labour and Regional Economics claus.schnabel@wiso.uni-erlangen.de