Université de Fribourg

Regional differences in perceived corruption among Ukrainian firms

Denisova-Schmidt, Elena ; Huber , Martin

In: Eurasian geography and economics, 2014, vol. 55, no. 1, p. 10-36

This paper investigates regional differences in the perception of corruption and informal practices among Ukrainian firms. Using two different data sets from Ukraine, we show that perceived corruption differs significantly across regions, even when taking into account the size, industry, workforce composition, and other characteristics of the firms based on propensity score matching. In...

Université de Fribourg

Treatment Evaluation With Multiple Outcome Periods Under Endogeneity and Attrition

Fröhlich , Markus ; Huber , Martin

In: Journal of the American Statistical Association, 2014, vol. 109, no. 508, p. 1697-1711

This article develops a nonparametric methodology for treatment evaluation with multiple outcome periods under treatment endogeneity and missing outcomes. We use instrumental variables, pretreatment characteristics, and short-term (or intermediate) outcomes to identify the average treatment effect on the outcomes of compliers (the subpopulation whose treatment reacts on the instrument) in...

Université de Fribourg

Causal Pitfalls in the Decomposition of Wage Gaps

Huber , Martin

In: Journal of business & economic statistics, 2015, vol. 33, no. 2, p. 179-191

The decomposition of gender or ethnic wage gaps into explained and unexplained components (often with the aim to assess labor market discrimination) has been a major research agenda in empirical labor economics. This article demonstrates that conventional decompositions, no matter whether linear or nonparametric,areequivalenttoassuminga(probablytoo)simplemodelofmediation(aimed atassessing...

Université de Fribourg

Why do tougher caseworkers increase employment? : The role of programme assignment as a causal mechanism

Huber , Martin ; Lechner, Michael ; Mellace, Giovanni

In: Review of economics and statistics, 2017, vol. 99, no. 1, p. 180-183

Previous research found that less accommodating caseworkers are more success- ful in placing unemployed workers into employment. This paper explores the causal mechanisms behind this result using semiparametric mediation analysis. Analysing rich linked jobseeker-caseworker data for Switzerland, we find that the positive employment effects of less accommodating caseworkers are not driven by a ...