In jüngster Zeit wurde eine Vielzahl von Kombilohnvorschlägen zur Bekämpfung der Arbeitslosigkeit gemacht (vgl. z.B. Sinn et al. 2006; Sachverständigenrat 2006). Diese sollen Abhilfe bei der persistenten Langzeitarbeitslosigkeit und den hohen Arbeitslosenraten bei Niedrigqualifizierten schaffen....

This lecture is a tour dhorizon of the financial crisis aimed at extracting lessons for future financial regulation. It combines normative recommendations based on conventional welfare economics with positive assessments of the kind of measures likely to be adopted based on political economy...

Several contributions have recently assessed the size of fiscal multipliers both in RBC models and New Keynesian models. None of the studies considers a model with frictional labour markets which is a crucial element, particularly at times in which much of the fiscal stimulus has been directed...

This paper examines the labour market matching process by distinguishing its two component stages: the contact stage, in which job searchers make contact with employers and the selection stage, in which they decide whether to match. We construct a theoretical model explaining two-sided selection...

The thesis analyzes monetary and labor policies under different market frictions. In the first part several versions of a microfounded dynamic general equilibrium model with monopolistic competitors in the product and/or labor market are derived and simulated. First of all, the monetary...

Changes in monetary policy are typically implemented gradually, an empirical observation known as interest-rate smoothing. We propose an explanation of optimal interest-rate smoothing by applying the recent lesson from the related literature on the monetary transmission mechanism that...

Ramsey models of fiscal and monetary policy with perfectly-competitive product markets and a fixed supply of capital predict highly volatile inflation with no serial correlation. In this paper, we show that an otherwise-standard Ramsey model that incorporates capital accumulation and habit...

We study how the countercyclicality of temporary layoffs affects aggregate unemployment fluctuations, firm entry and exit dynamics, and macroeconomic fluctuations by building a tractable framework with equilibrium unemployment and endogenous firm entry and exit where firms have a choice over...

The Hartz IV labour market reform in 2005 triggered a substantial reduction in unemployment in Germany. At the same time, it reduced social welfare for the long-term unemployed and increased uncertainty for the employed. The proposed reform by the new government ("Bürgergeld") will adjust the...