European and world energy perspectives: the 1980s and 1990s

Substantial successes have been achieved since 1973 in increasing energy efficiency and substituting other fuels for oil. However, reliance on oil and oil imports remains high. The temporary easing on the oil market must not lead to complacency as any relaxation in energy policy efforts may well contribute to provoking the next oil price shock.     

Disentangling Treatment Effects of Active Labor Market Policies: The Role of Labor Force Status Sequences

This paper estimates treatment effects of two active labor market policies – a training program and a wage subsidy scheme – on participants' employment probabilities. The analysis is based on unique data from the 18th wave of the Polish Labor Force Survey containing detailed and extensive individual labor force status histories. We discuss two variants of an exact covariate matching procedure adapted to the specific nature of the data. Our study confirms and reinforces a point raised in recent research [Heckman, J.J., Smith, J.A. The Pre-programme Earnings Dip and the Determinants of Participation in a Social Programme: Implications for Simple Programme Evaluation Strategies. The Economic Journal 1999; 109; 313-348., Heckman, J.J., Smith, J.A. The Determinants of Participation in a Social Program: Evidence from a Prototypical Job Training Program. Journal of Labor Economics 2004; 22; 243-298.], that pre-treatment labor force status dynamics play a decisive role in determining program participation. We implement a conditional difference-in-differences estimator of treatment effects based on these individual trinomial sequences of pre-treatment labor market status. The estimator employs a “moving window” technique that nicely controls for changes in the macroeconomic environment over time. Our findings suggest that training raises individual employment probability, while wage subsidies display negative treatment effects for participants in the Polish case.     

Der direkte internationale Preiszusammenhang

Ohne Zusammenfassung     

Manipulierte Schadenfälle als Herausforderung für die Praxis

Der Versicherungsbetrug hat insbesondere in den letzten Jahren stark zugenommen. In diesem Artikel werden Abwehrstrategien und Erfolgsfaktoren der Betrugsabwehr eines Versicherungsunternehmens beispielhaft dargestellt. Mit Hilfe der vorgestellten Vorgehensweisen wird sowohl dem Eigenschutz des Versicherungsunternehmens als auch dem Schutz der Versicherungsgemeinschaft Rechnung getragen.     

Profit Sharing, Capital Formation and the NAIRU

This paper reconsiders the impact of different remuneration systems on aggregate employment. Contrary to common wisdom on this topic, we show that the switch from a fixed wage economy to a share economy results in lower aggregate unemployment. An additional innovation of this paper is the endogeneity of the capital stock decision of the firm, which enables us to assess and reject the common "disincentive-to-invest" criticism of a share economy.     

洛桑国际管理学院——下属企业也应良好治理

六条人命,几十人药物不良反应,一种叫"欣弗"的药,让安徽华源生物药业有限公司,及其与之有关联的上海华源股份有限公司、中国华源集团悉数出现在人们的视野里。安徽华源的"问题欣弗",也给那些"航母级"的企业提了醒:下属企业同样需要公司治理。