Empirical work on the wage impact of training has noted that unobserved heterogeneity of training participants should play a role. The expected return to training, which partly depends on unobservable characteristics, is likely to be a crucial criterion in the decision to take part in training...

This paper focuses on the causal effect of overqualification on earnings. Although the issue of overqualification has recently been addressed by quite a huge body of literature there are only few studies examining the causal effect of overqualification on earnings in the sense of Rubins...

This paper analysis the robustness of the causal relationship between schooling and wages. Different estimators and instruments are compared under the assumption of heterogeneous returns to schooling. A data set from Germany is employed. It is shown that the results depend crucially on the...

This paper investigates the evolution of wages and the recent tendency to rising wage inequality in Germany, based on the German Socio-Economic Panel (GSOEP) for 1984 to 2004. Between 1984 and 1994 the wage distribution was fairly stable. Wage inequality started to increase around 1994 in...

There are theoretical foundations which allow hypothesizing on a positive association of life expectancy or retirement age with income. If both cannot be falsified, the relationship of income and the internal rate of return of a public pension system is not straight forward. By application of a...

Professionalizing the system of control in a still public system implies that the university administration becomes an agent of the academic board of the university rather than serving the interests of the state as the principal. This induced organizational change alters the bargaining positions...

This paper introduces and discusses an idea which minimizes gaming or manipulation activities, if payments are linked to results from manipulative methods. The idea is to add nonmanipulable information to manipulable information to improve the evaluation of a given output. A score declining in...

Wage and productivity effects of training are compared to study how the training rent is shared between employers and employees. Using panel data from 1996-2002, I analyse the impact of continuing training on wages and productivity in a Cobb-Douglas production framework. Using system GMM...

This paper investigates the effect of reforms on the time-to-degree and attendance at colleges. My model predicts that with imperfect credit markets imposing tuition fees may raise instead of reducing the time-to-degree. In the final section of the paper, I present a proposal for a reform which...

Most normative studies on child labor arrive at the conclusion that child labor is detrimental to social welfare. Child labor is, however, still prevalent in many developing countries even though in many of these countries it is forbidden by law. In this paper we develop a political-economic...