In this article, we discuss reform elements of "Hartz IV". This includes, on the one hand, merging unemployment benefits with housing benefits and the additional child benefits (Kinderzuschlag) and, on the other hand, reducing disincentives which prevent the recipients from earning higher...

Seit 2005 ist Hartz IV in Kraft. Das Gesetz hat Leistungen der Arbeitslosenhilfe und der Sozialhilfe zusammengeführt. Seit seinem Inkrafttreten ist die Arbeitslosigkeit deutlich zurückgegangen. Ob dies nun vor allem an der Hartz-IV-Reform lag oder ob andere Ursachen für die positive...

An important question for firms and policy makers is whether the recruitment of foreign workers can boost innovation. Migration studies have demonstrated positive economic impacts of cultural diversity on productivity and innovation at the regional level, but the impacts at firm level are less...

We suggest a new way to quantify the growth effects of capital mobility. We find that for reasonable parameter values, capital mobility has a large impact on income growth.

The role of human capital has so far not been well documented at the macroeconomic level. Many empirical studies lack a consistent theoretical foundation and there are measurement problems due to a very narrow concept of human capital focusing on formal education. Future empirical research...

Openness appears to have a strong impact on economic growth especially in DCs, which typically exhibit a high share of physical capital in factor income and a low share of labor. In the neoclassical growth model with partial capital mobility, physical capital?s share in factor income determines...