Diese Dissertation setzt sich aus vier Arbeiten zusammen, die Forschungsfragen bezüglich verschiedener Kernaufgaben von Versicherungsunternehmen betrachten: Das Pricing von Versicherungsprodukten, die Schätzung zukünftiger Schäden, das Management von Aktiva und Passiva und die Erfüllung der...

This paper presents and compares several time-series models for returns of broadbased stock indices. These models nest a nonlinear asymmetric GARCH (NGARCH) model as a special case. Some of these models are empirically motivated ad-hoc specifications others are derived from a representative...

A model is presented for simulating the tax burden on highly skilled manpower. The effective average tax rate, defined as the relative wedge between total remuneration and disposable income, is computed. Income and payroll taxes and social security contributions not yielding an equivalent...

The study provides evidence for the rationale of wage rigidity in Germany compared to the United States. Based on a survey of 801 firms, we extend the study of Campbell and Kanlani (1997, this journal) by using more thorough econometric methods, for example, and find strong support for...

This paper analyzes whether Taylor-type policy rules can be used to describe the behavior of the Federal Reserve and the European Central Bank from the beginning of 1999 until mid 2002. Since there was no common monetary policy for the Euro area before 1999, we examine if the average Central...

This paper analyzes how the implicit difference in time horizons between refugees and economic immigrants affects subsequent human capital investments and wage assimilation. The analysis uses the 1980/1990 Integrated Public Use Samples of the Census to study labor market outcomes of immigrants...