In the German wastewater sector, innovations are often regarded to be the key to better service provision. Our focus is on the question of whether less direct control by the authorities does improve the innovativeness of providers of wastewater services. On the basis of data from a survey among...

Die Umweltpolitik in Deutschland konnte in den vergangenen Jahrzehnten beachtliche Erfolge aufweisen. Als Beispiele können der Rückgang der Emissionen verschiedener "klassischer" Luftschadstoffe, die Verbesserung der Abwasseraufbereitung sowie der Einstieg in die Kreislaufwirtschaft genannt...

This study analyses a parametric estimator for a system of equations with limited dependent variables that was recently proposed. Its performance is compared with those of alternative estimation procedures using Monte Carlo methods. The comparison shows that this new estimator is less efficient...

Nonrandom sample selection may render estimated treatment effects biased even if assignment of treatment is purely random. Lee (2009, Review of Economic Studies, 76: 1071–1102) proposes an estimator for treatment-effect bounds that limit the possible range of the treatment effect. In this...

ABSTRACT An inverse relationship between job insecurity and sickness absence has been established in the literature, which is explained by employees avoiding to send signals of both poor health and uncooperative behavior towards the employer. In this paper, we focus on whether the same mechanism...

Obesity and overweight are linked to diseases that cost society a significant amount of resources. While behavior modification can reduce the problem, instigating such lifestyle changes is an uneasy task. One potential way to reduce the problem is through the use of financial incentives. In this...