When the centre-left government came into power in Germany in 1998, a core promise of the new Chancellor, Schroeder, was to reduce the lack of jobs and to increase welfare. Facing persistently increasing unemployment rates from then on, the government finally launched Hartz IV in 2004; the largest...

According to a widely held belief, all who are able to work, should work . We consider this statement within a framework of non-linear taxation. The crucial differ-ence between our model and the standard model is that the government can distinguish between productive persons and the disabled. A...

Previous research on optimal R\& D subsidies has focussed on the long run. This paper characterizes the optimal time path of R\& D subsidization in a semi- endogenous growth model, by exploiting a recently developed numerical method. Starting from the steady state under current R\& D...

Recently, early investments in the human capital of children from socially disadvantaged environments have attracted a great deal of attention. In a discrete version of the Mirrlees model with a parents' and a children's generation we show the intra-generational and the inter-generational...