Internet peering as a network of relations

This paper applies results from recent theoretical work on networks of relations to analyze optimal peering strategies for asymmetric Internet Service Providers (ISPs). From a network of relations perspective, ISPs’ asymmetry in bilateral peering agreements need not be a problem, since when these form a closed network, asymmetries are pooled and information transmission is faster. Both these effects reduce the incentives for opportunism in general, and interconnection quality degradation in particular. The paper also explains why bilateral monetary transfers between asymmetric ISPs (Bilateral Paid Peering), though potentially good for bilateral peering, may have negative effects on the sustainability of the overall peering network.     

Welfare Analysis of Regulating Mobile Termination Rates in the U.K.

We develop a calibrated simulation model of the U.K. mobile telephony market and use it to analyze the effects of reducing mobile termination rates (MTR's) as recommended by the European Commission. We find that reducing MTR's is likely to increase both consumer surplus and networks' profits. Depending on the strength of call externalities (i.e., benefits to the recipient of a call), social welfare may increase by as much as £1 billion to £4.6 billion per year. We also use the model to estimate the welfare effects of the 2010 merger between Orange and T‐Mobile and find that the merger led to a substantial reduction in consumer surplus.     

Works Councils and Labour Productivity: Looking beyond the Mean

After more than 25 years of empirical investigation, the analysis of works council effects on establishment productivity is still an active field of economic research. I present first evidence for works council regression coefficients along the unconditional log labour productivity distribution in Germany. The highest (lowest) coefficients were found at the bottom (top) of the distribution, which suggests that works councils have the most beneficial effects at low levels of productivity. Importantly, coefficients are positive at each productivity level. The results shed light on a classical theoretical argument concerning moderating factors for the productivity effect of employee participation.     

When Employees Walk The Company Talk: The Importance Of Employee Involvement In Corporate Philanthropy

Although corporate philanthropy is often viewed as a vehicle for fostering employee commitment, research suggests that it does not always accomplish this goal. Drawing on theories on prosocial sensemaking and on social identity theory, I propose that involving employees in corporate philanthropy encourages more benevolent attributions for philanthropy, thereby promoting higher attitudinal and behavioral commitment. In Study 1, a field study with employees and supervisors in a chemical‐pharmaceutical firm, employee involvement in corporate philanthropy predicted higher attitudinal and behavioral commitment to the firm. In Study 2, a laboratory experiment, participants reported higher attitudinal and behavioral commitment to a company when it was described as involving employees in philanthropy. In both studies, benevolent attributions mediated the associations of employee involvement in philanthropy with both attitudinal and behavioral commitment. My research provides new insights for understanding the impact of corporate philanthropy on a particularly important group of stakeholders—employees—and shows how employee involvement may encourage insiders to act to improve the organization's external image. © 2016 Wiley Periodicals, Inc.     

The effect of individual uncertainty on the specificity of human capital: empirical evidence from career developments in professional soccer

This study looks at careers in professional soccer to investigate the determinants of human capital (HC) specificity. Inspired by labour market research, we formulate three hypotheses on how uncertainty about the usefulness of individuals’ (more productive) specific skills affects their investment in (more flexible) general skills. The empirical analysis is based on unique panel data on school grades, soccer evaluations, and sociodemographic characteristics of 90 elite players from the youth academy of a German Bundesliga club. We find that senior and long-serving players, who are comparably certain that their (soccer) specific capital will be sufficient to pursue a lucrative professional career, invest less in general HC at school. Expected soccer performance, in contrast, has a counterintuitive positive effect. Our results expand knowledge on the factors influencing HC specificity from the macro to the subject level and highlight practical implications for institutions that train gifted individuals.     

Universal Service and Entry: The Role of Uniform Pricing and Coverage Constraints

Universal service objectives are pervasive in telecommunications, and have gained new relevance after the introduction of competition in many markets. Despite their policy relevance, little work has been done allowing for a thorough discussion of instruments designed to achieve universal service objectives under competition. We intend to fill this gap, and disaggregate the problem into interacting forms of regulatory intervention such as uniform pricing and coverage constraints. It is shown that these are not competitively neutral and may have far-reaching strategic effects. Under uniform pricing, equilibrium coverage of both incumbent and entrant may be lower than without regulation. These effects depend on which measures are imposed at the same time, thus no single measure can be evaluated in isolation. We also point out that different groups of consumers are affected in different ways, making welfare comparisons difficult.     

Should uniform pricing constraints be imposed on entrants?

This paper analyzes uniform pricing, coverage constraints and price caps in markets newly opened to competition, e.g. broadband services. We show that the requirement of uniform pricing has strong repercussions on coverage decisions. Imposed on incumbents only it may distort their coverage decision downward to avoid duopoly entry. If also imposed on entrants it increases the likelihood that entry leads to independent monopolies rather than competition. A sufficiently large coverage constraint on incumbents reestablishes incentives for duopoly entry, but may lead to higher prices.      

How Much Did Oil Market Developments Contribute to the 2009 Recession in Germany?

In this paper, we use a structural vector autoregressive model to study the effects of oil market developments on the German economy. We find that higher oil prices are always associated with a decline in private consumption expenditures, but the response of gross domestic product (GDP) crucially depends on the underlying shock. While a disruption in oil supply provokes a recession, positive world demand shocks prompt a temporary increase in exports and investment, which initially outweigh the cutback on consumption. In a counterfactual analysis, we show that the world demand shocks that led to the 2007/2008 oil price rise triggered a delayed 0.8 percent decrease in German GDP in 2009, and therefore notably contributed to the recession of that year.     

What matters in the finance–growth nexus of advanced economies? Evidence from OECD countries

Over the last decades, a large strand of finance and growth literature has provided ample evidence on the importance of financial deepening for economic development. Yet, recently, the focus of public debate has shifted towards the role of the financial system structure, an area in which empirical research remains relatively sparse and exploratory in nature. With this article, we aim to contribute to that debate by analysing the role the financial system structure plays in economic growth and risk. Focusing on stock markets and studying OECD economies over 1994–2013, we find that, ceteris paribus, financial systems with relatively larger stock markets facilitate economic growth and dampen economic risk. Our findings remain robust under application of instrumental variable and system generalized method of moments estimators, as well as when we use an alternative definition of stock market development, estimate median regressions, examine relatively high-frequency annual data, control for systemic banking crises or apply quadratic specifications. We find no such effect for private bond markets or private credit volume. Overall, our results suggest that financial system structure matters for the economic development of advanced economies and highlight the importance of a debate about the optimal structure of an economy’s financial system.