Das Arbeitgeberimage der Versicherungsbranche bei Studienanfängern der Wirtschaftswissenschaften

Zeitschrift für die gesamte Versicherungswissenschaft - Regelmäßig wird der Versicherungsbranche von unterschiedlichsten Seiten her ein schlechtes Image attestiert. Das Ignorieren...     

Sequential Monte Carlo for fractional stochastic volatility models

In this paper, we consider a fractional stochastic volatility model, that is a model in which the volatility may exhibit a long-range dependent or a rough/antipersistent behaviour. We propose a dynamic sequential Monte Carlo methodology that is applicable to both long memory and antipersistent processes in order to estimate the volatility as well as the unknown parameters of the model. We establish a central limit theorem for the state and parameter filters and we study asymptotic properties (consistency and asymptotic normality) for the filter. We illustrate our results with a simulation study and we apply our method to estimate the volatility and the parameters of a long-range dependent model for S& P 500 data.     

Who is Who

Praxis / MagazinNews

Who is Who     

Political Connectedness and Firm Performance: Evidence from Germany

Abstract. This paper investigates politically connected firms in Germany. With the introduction of a new transparency law in 2007, information on additional income sources for all members of the German parliament became publicly available. We find that members of the conservative party (CDU/CSU) and the liberal party (FDP) are more likely to work for firms than members of left‐wing parties (SPD and The Left) or the green party (Alliance 90/The Greens). Politically connected firms are larger, less risky and have lower market valuations than unconnected firms. They also have fewer growth opportunities, but slightly better accounting performance. On the stock market, connected firms significantly outperformed unconnected firms in 2006, i.e. before the publication of the data on political connections. Differences in stock market performance were much smaller in 2007.     

The Validity of Gibrat’s Law: Evidence from Ecuadorian Service SMEs

The objective of this research is to analyze the relationship between size and growth through the validation of Gibrat's law. A sample of 17,082 Ecuadorian companies in the service sector is used for the period 2010–2015. The estimation method used is that of quantile regression for panel data; the results suggest that small companies grow faster than their larger counterparts. The results show that the growth, measured through sales and employment, of SMEs in the service sector in Ecuador is not independent of firm size and therefore does not correspond to a random process.     

Inequality and business cycles in the U.S. and European Union countries

This paper derives the business cycle properties of some aggregate and disaggregate inequality indices for the U.S. and three European Union countries (United Kingdom, Italy, and Greece). The findings suggest that inequality indices move countercyclically with output in the U.S. and the United Kingdom, a procyclical behavior prevailed in Greece, and a mixed cycle influenced Italy. A common countercyclical pattern of inequality indices with inflation and unemployment characterizes the three large economies (U.S., United Kingdom, and Italy). Also, in most countries, the top income group seems to lose at the benefit of the rest during inflationary periods while, in all four countries, the poor will gain from inflation and suffer from unemployment.     

The effect of cost information on buyer–supplier negotiations in different power settings

We investigate the influence of total cost of ownership (TCO) information on buyer–supplier negotiations in different power settings. Based on social exchange theory and recent literature on information processing, we expect that buyers with detailed TCO information and less power than their negotiation partners may try to (re)gain control over their own outcomes by sharing information. The results of our experiment indicate that the performance disadvantage of less powerful buyers is less pronounced when the buyer has detailed TCO information, whereas more powerful buyers do not seem to be able to profit from TCO information. These somewhat counterintuitive findings are explained through detailed analysis of the buyer’s negotiation behavior, which shows that less powerful buyers who have access to TCO data use problem solving techniques more frequently than powerful buyers, who tend to rely on distributive bargaining techniques instead. We conclude that power can motivate a failure to share TCO information, resulting in less effective interfirm negotiation outcomes.     

Non-Segmented Equilibria Under Differential Taxation: Evidence from the Canadian Government Bond Market

This paper investigates tax effects in the Canadian government bond market during the period 1964–1986. Unlike previous studies, we apply both statistical and nonstatistical tests to analyze clientele effects and market equilibria. The results divide the sample into two distinct periods of time, with the end of 1976 marking the division. We find that taxeffects are almost non-existent in the Canadian government bond market before the end of 1976, but are predominant in the post-1976 period. Non-segmented market equilibria cannot be rejected before 1977, but are strongly rejected after 1976. In fact, segmented equilibria with clientele effects in both quantities and prices characterize the entire five year period from 1982 to 1986. These findings are consistent with tax reforms, government deficit financing and interest rate fluctuations in Canada during our sample period.     

Are cooperatives the weakest link in European banking? A non-parametric metafrontier approach

This paper investigates the productive performance of cooperative banking firms as compared to their commercial and savings counterparts, accounting for technology heterogeneity due to different ownership in European banking. Based on the metafrontier notion, we introduce a methodology which allows the identification of technology gaps among different bank types and their decomposition into input- and output-invariant components. Our findings suggest that the type-specific frontier corresponding to cooperative banking firms lies, to its largest part, away from the European metafrontier. Furthermore, within the cooperative bank type a dichotomy seems to arise. The decomposition results suggest that the cooperatives’ technology gap is attributed to output production rather than input use.     

Actions speak louder than words: how employees mind the implementation gap

Abstract

Integral to employees’ working lives are the HR policies and more importantly, the practices that follow those and their implementation, which employees experience directly. To date, research on HR implementation considers how HRM is ‘done to’ employees by management and therefore ignores the agency of individuals to shape how HRM is ‘done to them’. Taking the perspective of employees, in a qualitative study of female lawyers, this paper examines employees’ roles in shaping HR implementation, addressing a lack of understanding about the role of ‘others’ in the process. Drawing on the concept of social power, the article focuses on the implementation of agile working practices within UK-based law firms. It finds that despite lacking legitimate position power to influence processes, employees draw on a variety of other power sources (e.g. referent, information, coercive) and tactics (e.g. leveraging membership of professional networks) in order to influence their working environment with respect to HR policy and practice, particularly in response to perceived implementation gaps. The current study underlines that employees may be integral to bridging the gap between policy and practice and therefore to ensuring the link between HRM and organisational performance. It also proposes that behavioural responses to HR practices should be considered in future theorising of the HRM-performance relationship.