Structural empirical analysis of vacancy referrals with imperfect monitoring and the strategic use of sickness absence / Gerard J. van den Berg (University of Groningen, University Medical Center Groningen, IFAU Uppsala, IZA, ZEW and CEPR), Hanno Foerster (Boston College and IZA), Arne Uhlendorff (CNRS and CREST, IAB Nuremberg, DIW and IZA) ; IZA Institute of Labor Economics
