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Welche Sicherheit und Rendite bietet die kapitalgedeckte Alterssicherung? : Zu Möglichkeiten der Risikoabschätzung (2003)

Raimond Maurer

Der "Generationenvertrag" der gesetzlichen Rentenversicherung hat die Grenzen seiner Leistungsfähigkeit erreicht. Damit ist die "erste Säule" der Alterssicherung, die auf diesem Umlageverfahren basiert, ins Wanken geraten. Schuld daran ist die zunehmende Überalterung der Gesellschaft, aber auch die anhaltend hohe Arbeitslosigkeit, die zu enormen Beitragsausfällen führt. Schon heute sind die Rentenzahlungen nur noch zu rund 75 Prozent durch die Sozialversicherungsbeiträge der arbeitenden Bevölkerung gedeckt, der Rest muss – ähnlich wie bei den Beamtenpensionen – aus dem allgemeinen Steueraufkommen finanziert werden. Das birgt vor allem für die jungen Beitragszahler substanzielle Risiken. Angesichts dieser Perspektiven sind immer weniger junge Menschen bereit, steigende Rentenbeiträge bei stetig sinkenden Leistungen zu akzeptieren. Kann die kapitalgedeckte Alterssicherung diese Defizite auffangen? Wie lassen sich die vielfältigen Konzepte der privaten Alterssicherung bewerten?

Die Behandlung latenter Steuern im Jahresabschluss und ihr Informationsgehalt im Rahmen der Unternehmensanalyse : ein zielgerichteter Vergleich der Rechnungslegungsvorschriften nach HGB, US-GAAP und IAS unter Berücksichtigung der Bilanzierungspraxis der DAX-100-Unternehmen (2003)

Christoph Weber

E-Business-Konzepte für den Mittelstand (2003)

Sebastian Hummel Wolfram Koch Bernd Skiera

Overbidding in fixed rate tenders - an empirical assessment of alternative explanations (2003)

Dieter Nautz Jörg Oechssler

This paper investigates various theories explaining banks´ overbidding in the fixed rate tenders of the European Central Bank (ECB). Using auction data from both the Bundesbank and the ECB, we show that none of the theories can on its own explain the observed overbidding. This implies that the proposed new rules by the ECB, aimed at neutralizing interest rate expectations, would not eliminate overbidding if the rationing rule in the fixed rate tenders remains unchanged. JEL - Klassifikation: D44 , E32

Bidder behavior in repo auctions without minimum bid rate : evidence from the Bundesbank (2003)

Tobias Linzert Dieter Nautz Jörg Breitung

A distinguishing feature of the ECB’s monetary policy setup is the preannouncement of a minimum bid rate in its weekly repo auctions. However, whenever interest rates are expected to decline, the minimum bid rate is viewed as too high and banks refrain from bidding, severely impeding the ECB’s money market management. To shed more light on banks’ underbidding, we perform a panel analysis of the bidder behavior in the repo auctions of the Bundesbank where no minimum bid rate was set. Our results indicate that neither bank’s participation nor the submitted bid amount is significantly affected by an expected rate cut. This suggests that abandoning the minimum bid rate might increase the efficiency of the ECB’s money market management. JEL-Classification : C23, D44, E52

New evidence on the effects of job creation schemes in Germany : a matching approach with threefold heterogeneity (2003)

Reinhard Hujer Marco Caliendo Stephan L. Thomsen

This paper evaluates the effects of job creation schemes on the participating individuals in Germany. Since previous empirical studies of these measures have been based on relatively small datasets and focussed on East Germany, this is the first study which allows to draw policy-relevant conclusions. The very informative and exhaustive dataset at hand not only justifies the application of a matching estimator but also allows to take account of threefold heterogeneity. The recently developed multiple treatment framework is used to evaluate the effects with respect to regional, individual and programme heterogeneity. The results show considerable differences with respect to these sources of heterogeneity, but the overall finding is very clear. At the end of our observation period, that is two years after the start of the programmes, participants in job creation schemes have a significantly lower success probability on the labour market in comparison to matched non-participants. JEL Classification: H43, J64, J68, C13, C40

Evaluation der Netto-Effekte von ABM in Deutschland : ein Matching-Ansatz mit Berücksichtigung von regionalen und individuellen Unterschieden (2003)

Marco Caliendo Reinhard Hujer Stephan L. Thomsen

Macroeconomic impacts of ALMP on the matching process in West Germany (2003)

Reinhard Hujer Christopher Zeiss

This paper investigates the macroeconomic effects of job creation schemes and vocational training on the matching processes in West Germany. The empirical analysis is based on regional data for local employment office districts for the period from 1999 to 2003. The empirical model relies on a dynamic version of a matching function augmented by ALMP. In order to obtain consistent estimates in the presence of a dynamic panel data model, a first-differences GMM estimator and a transformed maximum likelihood estimator are applied. Furthermore the paper considers the endogeneity problem of the policy measures. The results obtained from our estimates indicate that vocational training does not significantly affect the matching process and that job creation schemes have a negative effect. JEL Classification: C23, E24, H43, J64, J68

Comparison of MSACD models (2003)

Reinhard Hujer Stefan Kokot Sandra Vuletić

We propose a new framework for modelling time dependence in duration processes on financial markets. The well known autoregressive conditional duration (ACD) approach introduced by Engle and Russell (1998) will be extended in a way that allows the conditional expectation of the duration process to depend on an unobservable stochastic process which is modelled via a Markov chain. The Markov switching ACD model (MSACD) is a very flexible tool for description and forecasting of financial duration processes. In addition, the introduction of an unobservable, discrete valued regime variable can be justified in the light of recent market microstructure theories. In an empirical application we show that the MSACD approach is able to capture several specific characteristics of inter trade durations while alternative ACD models fail. JEL classification: C22, C25, C41, G14

Modeling the trading process on financial markets using the MSACD model (2003)

Reinhard Hujer Stefan Kokot Sandra Vuletić

We propose a new framework for modeling time dependence in duration processes. The ACD approach introduced by Engle and Russell (1998) will be extended so that the conditional expectation of the durations depends on an unobservable stochastic process which is modeled via a Markov chain. The Markov switching ACD model (MSACD) is a flexible tool for description of financial duration processes. The introduction of a latent information regime variable can be justified in the light of recent market microstructure theories. In an empirical application we show that the MSACD approach is able to capture specific characteristics of inter trade durations while alternative ACD models fail. JEL classification: C41, C22, C25, C51, G14

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