Imperfect monitoring of job search : structural estimation and policy design / Bart Cockx (Sherppa, Ghent University, IRES, IZA and CESIfo), Muriel Dejemeppe (IRES, Universite catholique de Louvain), Andrey Launov (University of Kent, IZA and CESIfo), Bruno Van der Linden (IRES, Universite catholique de Louvain, FNRS, IZA and CESIfo) ; IZA, Institute of Labor Economics. Bonn, Germany : IZA Institute of Labor Economics, January 2017