In this paper we propose a novel methodology to analyze optimal policies under model uncertainty in micro-founded macroeconomic models. As an application we assess the relevant sources of uncertainty for the optimal conduct of monetary policy within (parameter uncertainty) and across models...

We develop a tractable macroeconomic model with employment risk and labor market search in order evaluate the effects of labor market reform on unemployment, growth, and welfare. The model has a large number of risk-averse households who can invest in risk-free physical capital and risky human...

In recent decades, the world has faced an increasing number of natural and man-made disasters. Such disasters include tsunamis, earthquakes, the current ongoing financial crisis, terrorism, riots, and wars. These disasters generate tremendous social and economic costs, especially for the poor in...

In the recent economic debate on the design of fiscal policy in Germany it is gene rally agreed that the total hurden of taxes and levies has to be reduced. In this paper, arguments that form the basis of this claim are evaluated within a calihrated Real Business Cycle model. The analysis shows...