We investigate the finite sample properties of a large number of estimators for the average treatment effect on the treated that are suitable when adjustment for observable covariates is required, like inverse probability weighting, kernel and other variants of matching, as well as different...

Based on new, exceptionally informative and large German linked employer-employee administrative data, we investigate the question whether the omission of important control variables in matching estimation leads to biased impact estimates of typical active labour market programs for the...

This paper investigates the link between variation in the supply of workers who participate in spe­cific types of active labour market policies (ALMPs) and firm performance using a new exceptionially informative German employer-employee data base. For identification we exploit that German local...

This paper investigates the average effects of (firm-provided) workplace health promotion measures in form of the analysis of sickness absenteeism and health circles/courses on labour market out­comes of the firms' employees. Exploiting linked employer-employee panel data that consist of rich...