Mikroökonometrische Evaluation der ökonomischen Wirkungen betrieblicher Mitbestimmung - Möglichkeiten und Grenzen des Matching-Ansatzes
Birgit Schultz
Jahrbücher für Nationalökonomie und Statistik,
No. 5,
2006
Abstract
The evaluation of economic effects of workers participation is not simple from the methodical point of view because of specific characteristics of establishments with works councils. Especially recent studies show contradictory results. In this study problems are pointed out, discussed, and options for solution are presented on the example of workers participation in East German establishments of industry and construction by the IAB-Establishment Panel.
An optimal matching-algorithm which supplies good matching-results for small samples to assign 'statistical establishment-twins' is applied. But by reason of very short primarily spells it can only calculate short time effects. Therefore, the matching method is additionally used to construct longer observation periods. By this new application establishments with recently founded works councils are matched with so called 'proxy establishments' with existing works councils. As a result short observation periods are prolonged and information about long-term effects can be given.
The effects on productivity, profitability and qualification level of employees show neither in short-term nor in long-term a significant impact on workers' participation.
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Microeconometric Evaluation and the Selection Bias – A practical Survey of Nonparametrical Solution Methods
Eva Reinowski
Zeitschrift für Evaluation 2,
No. 2,
2006
Abstract
The application of evaluation strategies becomes more important in various fields of study. The problem of self-selection associated with microeconomic evaluation can be solved in different ways, but nonparametrical solutions are most popular. The study gives an overview of nonparametrical solution methods for this problem. The aim is to close the gap between introductory and the more sophisticated literature and to give some practical guidance for the choice of the appropriate method for empirical application. The assumptions as well as advantages and drawbacks for empirical application and the requirements to the data base are described for every approach. It becomes clear that there is no ‘magic bullet’. For an unbiased estimation the assumptions have to be fulfilled and the data at hand must be compatible with the respective method.
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Vielfältigkeit eines Hybridberufes: Mechatronikfacharbeiter nach der Ausbildung
Simone Scharfe, K. Tautenhahn
External Publications,
No. 8,
2006
Abstract
In the period from 2002 to 2004, 302 skilled workers successfully concluded their education as a mechatroniker, microtechnologist, chemical laboratory assistant, physics laboratory assistant or varnish laboratory assistant within the scope of the model project "compound education in new professions of high technology" which was initiated by the Saxonian State Ministry of Economy and Labor. The model project and the scientific monitoring were promoted from means of the European Social Fund and complementary state means of the Free State of Saxony.
Some months after the completion of their education, the graduates were questioned by the scientific monitoring about different aspects concerning the model project and its evaluation, points of interests have for example been:
§ the retrospective assessment of the education and the model project,
§ the estimation of their chances in the job market,
§ the professional whereabouts as well as
§ the evaluation of their knowledge in terms of its suitability for daily use.
In this article, the results of the last both points in the view of the mechatroniker, which are the biggest group in the model project with 180 graduates, are picked out as a central theme. Because the mechatronikers should combine the branches of the mechanics and the electronics in the second part of the result representation the actual operational areas of the former trainee are examined.
ich hätte evtl. einiges anders formuliert: (der Satzbau klingt sonst so eingedeutscht)
The article mainly refers to the last two points. Also, the view is limited to the results of the mechatroniker. Covering 180 graduates, it has been the largest group within the model project.
The intention of the new occupational image of the mechatroniker was a bridging of mechanics and electronics. Therefore, it is examined in the second part of this article, to which extend this bridging is reflected in the actual operational areas of the former trainees.
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Microeconometric Evaluation of Selected ESF-funded ALMP-Programmes
Eva Reinowski, Birgit Schultz
IWH Discussion Papers,
No. 17,
2006
Abstract
The study evaluates different ESF-funded labour market programmes by comparing the labour market status at different points in time after the treatment. In order to solve the selection problem we employ a standard matching algorithm with a multi-dimensional distance measure. The effects of the analyzed programmes (wage subsidies, start-up subsidies and qualification measures for recipients of social welfare) are very heterogeneous. It can be observed that the direct integration into the regular labour market provides an advantage for the supported individuals. Its lasting effects, however, strongly depend on the group of persons being supported, the type of treatment and the employers’ financial share.
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Institutional settings of social assistance: What is improved or unsolved by the
Joachim Wilde
Institutionen und Arbeitsmarkt: Messkonzepte, Wirkungszusammenhänge und internationaler Vergleich,
2006
Abstract
The last reform of benefits for long-term unemployed in Germany ("Hartz IV") did not reduce costs. Moreover, the number of recipients is much higher than it was expected before. Therefore, the institutional settings might be less effective than they could be. Initially, the paper describes the institutional changes by the "Hartz IV" reform. Afterwards, these changes are evaluated with respect to their effects on the number of recipients. The evaluation is based on the results of econometric studies concerning the former social assistance. It is pointed out that the reform improved basic conditions and incentives only partly, whereas some of its elements worsened the institutional settings.
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Gesamtwirtschaftliche Effekte der Förderung regenerativer Energien, insbesondere der Biomasse - Eine kritische Beurteilung vor dem Hintergrund modelltheoretischer Konzeptionen
Götz Zeddies
Zeitschrift für Umweltpolitik und Umweltrecht 2/2006,
No. 2,
2006
Abstract
Renewable energies are largely promoted in the Federal Republic of Germany by means of political instruments by the federal government as well as by the federal states. However, the effects of promoting renewable energies on growth and employment are politically controversial. On the part of the scientists, the macroeconomic effects of the promotion of renewable energies were already analysed in different studies by various authors. At first sight, even the scientific results do not allow definite conclusions. The reasons for this may be seen in the diversity of the applied empirical methods and models with respect to their closeness and the model assumptions. Against the background of these difficulties, the aim of this paper is to discuss the general problems of macroeconomic policy analyses, to formulate methodical model requirements and to examine important existing scientific studies with respect to these requirements and to evaluate their results.
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Options and Limits of the Matching Approach – An Application to Workers Participation
Birgit Schultz
IWH Discussion Papers,
No. 15,
2006
Abstract
The evaluation of economic effects of workers participation is not simple from the methodical point of view because of specific characteristics of establishments with works councils. Especially recent studies show contradictory results. In this study problems are pointed out, discussed, and options for solution are presented on the example of workers participation in East German establishments of industry and construction by the IABEstablishment Panel. An optimal matching-algorithm which supplies good matching-results for small samples to assign ‘statistical establishment-twins’ is applied. But by reason of very short primarily spells it can only calculate short time effects. Therefore, the matching method is additionally used to construct longer observation periods. By this new application establishments with recently founded works councils are matched with so called ‘proxy establishments’ with existing works councils. As a result short observation periods are prolonged and information about long-term effects can be given. The effects on productivity, profitability and qualification level of employees show neither in short-term nor in long-term a significant impact on workers’ participation.
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A method to evaluate peripheral retail locations considering as example the shopping area ‘Nova Eventis’
Alexander Kubis, Maria Hartmann
Wirtschaft im Wandel,
No. 6,
2006
Abstract
Der Strukturwandel im Einzelhandelsbereich führt zur Entstehung peripherer großflächiger Einzelhandelszentren. Deren Genehmigungsfähigkeit bedingt die Notwendigkeit einer sachlichen Prüfung ökonomischer Auswirkungen potentieller (neuer) Standorte. Mit diesem Beitrag wird eine geeignete Methodik zur Beantwortung dieser Problematik vorgestellt. Das entsprechende Vorgehen, das auf einem probabilistischen Gravitationsmodell beruht, wird eingehend am Beispiel einer Analyse für den Standort Nova Eventis in der Region Halle-Leipzig illustriert. Die empirische Basis stellen 1. eine Erhebung der Einzugsbereiche mittels „Licence Plate Analysis“ (PKW-Erhebung), 2. die einzelhandelsrelevanten Kaufkraft (GfK), 3. eine Distanzmatrix zwischen Kauf- und Wohnorten sowie 4. Angaben der Verkaufsfläche und absoluten Besucherzahl der einzelnen peripheren Einkaufszentren der Region dar. Aus der Analyse wird deutlich, daß die Lage (Distanz vom Kunden) und Größe (Verkaufsfläche) entscheidende Determinanten für die Einkaufswahrscheinlichkeit sind. Unter den gesetzten Annahmen kann ein Kaufkraftabfluß von rund 250 Mio. Euro p. a. aus den umliegenden Landkeisen nach Nova Eventis bestimmt werden. Mit der im Beitrag vorgestellten allgemeinen Methode wird die Möglichkeit eröffnet, ökonomische Auswirkungen der Ansiedlung peripherer Einzelhandelsstätten hinsichtlich der Verlagerung von Kaufkraftflüssen zu prognostizieren. Ausgehend von der Analyse der Kaufkraftströme der bereits bestehenden Einzelhandelsstätten wird auf die Auswirkungen des potentiellen Standortes geschlossen. Damit stellt das hier vom IWH vorgestellte Instrumentarium eine praktikable Entscheidungshilfe sowohl für die Genehmigungsbehörde als auch für das sich ansiedelnde Unternehmen dar.
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Longterm development of return on assets – an empirical panel data analysis
Olaf Neubert
Wirtschaft im Wandel,
No. 5,
2006
Abstract
One of the basic propositions of economic theory is the fact that competition does not allow permanent very high or very low returns. But how can the permanent surplus gain of a monopolist be distinguished from innovation gains? In which markets is a regulatory interference necessary? Contrary to the static analysis, the concept of dynamic competition explicitly considers the temporal development of return and gain. An entrepreneur can achieve an advantage over the competitors through new products or new production processes. Hence arising innovation gains function as incentives for imitators to join the development which in turn leads to a reduction of the surplus gains. Thus, these gains are not contradictory to an effective competition. On the basis of annual balance sheets of German firms, this article analyses the temporal development of returns on assets. It is to evaluate whether the adaptation process assumed by Schumpeter that matches very high and very low gains with a longterm level can be confirmed, and how fast this process works. The average industry returns of the manufacturing industry show a convergence to a longterm level. During this process, an average of 40% of the deviation from the longterm level are melted every year. However, the analysis of company returns shows longterm differences. The adaptation rate of companies, 50%, is significantly higher compared to the industry value. The analysis of the connection between the adaptation rate and the longterm return level of companies proves that companies which face above-average competition strength obtain a higher longterm return level than other companies. When firms operate within markets with high stress of competition they do not achieve below-average returns but rather significantly above-average returns in the long term.
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Forced to Freedom? Empirical Relations between Aid and Economic Freedom
Tobias Knedlik, Franz Kronthaler
IWH Discussion Papers,
No. 8,
2006
Abstract
The paper explores the relationships between economic freedom on the one side and development aid and IMF credit as approximation for conditional aid on the other side. After a short review of current literature on the issue of economic development, economic freedom, aid, and IMF credit, the paper develops a simple panel regression model to evaluate the relationship between “economic freedom” as dependent variable and “aid” and “IMF credit” as independent variables. The estimation is based upon data taken from the World Bank’s World Development Indicators and the Heritage Index of Economic Freedom. In contrast to previous research, our results allow the rejection of the hypothesis that IMF credit increases economic freedom and that aid is not contributing to economic freedom. The estimation results suggest that, firstly, aid is positively correlated with economic freedom, and secondly, that IMF credit is negatively correlated with economic freedom. Taking IMF credit as proxy for conditional aid, we conclude that for the period of observation it could not be shown that countries can be forced to economic freedom by aid conditions.
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