In a general equilibrium model of a small open economy with a nontraded goods sector involuntary low-skilled labour unemployment is introduced by an exogenously given wage rate, orientating ourselves by what has been called in the literature the 'European scenario'. By the concept of constrained...

Our contribution offers a methodological exhibition of general equilibrium models with price and quantity signals. By the application of optimal value functions the household as well as the firm behaviour is modelled. The concepts of virtual prices and virtual quantities allow us to express...

Should the realized risk premium be taxed – or not? In a simple two asset portfolio model we analyze the optimal taxation rule when the economy faces aggregate risk. We show in an appropriate designed tax system, that the risk premium of the risky asset should be fully taxed if the households...