We analyse the impact of different immigration policies on human capital investment in a search-theoretic model. This class of model features unemployment and underinvestment in human capital. We show that an immigration policy aiming at well educated immigrants leads to rising educational...

In a two-period model with agent heterogeneity we analyze a pension reform toward a stronger link between contributions and benefits (as recently observed in several countries) in a pension system with a Bismarckian and a Beveridgian component. We show that such a policy change reduces the...

In this survey, we compare the history and status of immigration of a traditional immigration county (the US) with the experiences of a new immigration country (Germany). This reveals differences in the immigration policy as in the immigration population in the respective countries. We resume...

Integrierte Umweltschutztechniken gewinnen international an Bedeutung, weil von ihnen neben ökologischen Vorteilen gleichzeitig auch Impulse für den Standortwettbewerb und damit den Arbeitsmarkt erwartet werden. Die Studie liefert¤ erstmals empirisch fundierte Aussagen zu den...