Dieser Beitrag nimmt aus theoretischer und ökonometrischer Sicht zu der Kontroverse über die Bedeutung der qualifikatorischen Lohnstruktur zur Erklärung der Beschäftigungsstruktur Stellung. Basierend auf einer Einteilung in drei Qualifikationsgruppen zeigt sich empirisch, dass die Entlohnung...

In order to reduce unemployment, it is often recommended that industry-level wage bargaining in Germany should be replaced by a more decentralized system. This paper provides a critical assessment of the current wage bargaining institutions and reexamines the case for a more decentralized...

Thema dieses Beitrags ist zum einen eine kritische Würdigung des Flächentarifvertrages (FTV) im Hinblick auf seine Regelungsdichte und zum anderen die theoretische Analyse eines Elements des Flexibilisierungspotentials des FTV, nämlich der Öffnungsklausel, unter Berücksichtigung der...

We study the impact of the arrival of macroeconomic news on the informational and noise-driven components in high-frequency quote processes and their conditional variances. Bid and ask returns are decomposed into a common ('efficient return') factor and two market-side-specific components...

This paper investigates the use of price intensities to estimate volatilities based on high-frequency data. We interpret the conditional probability for the occurence of a price event within a certain time horizon as a risk measure which allows us to obtain an estimator of the conditional...

When making decisions, agents tend to make use of decisions others have made in similar situations. Ignoring this behavior in empirical models can be interpreted as a problem of omitted variables and may seriously bias parameter estimates and harm inference. We suggest a possibility of...

The recent availability of large data sets covering single transactions on financial markets has created a new branch of econometrics which has opened up a new door of looking at the microstructure of financial markets and its dynamics. The specific nature of transaction data such as the...

This paper investigates the time between transactions on financial markets. It is assumed that the interval between transactions is a random variable and the relation- ship between the probability to observe a transaction at each instant of time and the type of the previous trade is...

Der vorliegende Beitrag bietet eine Literaturübersicht über Migration und Einwanderungspolitik. Zunächst wird eine Bestandsaufnahme über Migrationsströme vorgenommen. Die Bundesrepublik kann dabei auf eine reiche Erfahrung mit der Einwanderung von Gastarbeitern und in jüngerer Zeit auch...

This paper deals with the German apprenticeship training system. We first set the scene by describing the operation of the system, including the statistical picture in terms of supply and demand and costs; the relationship between the vocational training and the educational systems; the complex...