Reintegrating older long-term unemployed workers: the impact of temporary job guarantees / Alexander Ahammer (Johannes Kepler University Linz and IZA), Martin Halla (Vienna University of Economics and Business IZA, GÖG, Rockwool Foundation Berlin and WIFO), Pia Heckl (ifo Institute, Ludwig Maximilian Universityof Munich and CESifo), Rudolf Winter-Ebmer (Johannes Kepler University Linz, IZA, IHS, Rockwool Foundation and CEPR) ; IZA Institute of Labor Economics