Volatility‐Spillover Effects in European Bond Markets

Volatility spillover from the US and aggregate European bond markets into individual European bond markets using a GARCH volatility‐spillover model is analysed. Strong statistical evidence of volatility spillover from the US and aggregate European bond markets is found. For EMU countries, the US volatility‐spillover effects are rather weak (in economic terms) whereas the European volatility‐spillover effects are strong. The bond markets of EMU countries have become much more integrated after the introduction of the euro, and in recent years they have become close to being perfectly integrated. The main driver of the integration appears to be convergence in interest rates.     

Eco-efficiency and firm value

Eco-efficiency refers to a process that seeks to maximize the effectiveness of business processes while minimizing their impacts on the environment. Fundamental to eco-efficiency is adoption of a management philosophy that stimulates the search for environmental improvements that yield parallel economic benefits [President’s Council on Sustainable Development, 1996a. Sustainable America: A New Consensus for Prosperity, Opportunity, and a Healthy Environment. Government Printing Office, Washington DC; President’s Council on Sustainable Development, 1996b. Eco-efficiency: Task Force Report. Government Printing Office, Washington DC; World Business Council for Sustainable Development (WBCSD), 2000. Eco-efficiency: Creating More Value with Less Input. Geneva]. Eco-efficiency is increased by activities that create economic value while continuously reducing ecological impacts and the use of natural resources [DeSimone, L., Popoff, F., 1997. Eco-efficiency: The Business Link To Sustainable Development. MIT Press, Cambridge, MA]. This study empirically examines the proposition that implementation of eco-efficient business strategies is associated with higher firm value. We posit that, firms which adopt eco-efficient business strategies and, as a consequence, achieve reduced costs and increased profits should be more highly valued by the market than similar firms that do not adopt eco-efficient business strategies. Our empirical testing supports this proposition.     

Underwork,Work‐Hour Insecurity,and A New Approach to Wage and Hour Regulation

When it was passed in 1938, the Fair Labor Standards Act (FLSA) sought to address the “evils” of underpay and overwork by establishing an hourly minimum wage and requiring premium overtime pay. However, today's low‐wage, hourly workers more often face underwork than overwork, as well as fluctuating, unstable schedules, neither of which is addressed by the FLSA. This paper presents and assesses the effectiveness of an alternative approach to wage and hour regulation, the “reporting pay” guarantee. We begin by examining the problem of work‐hour insecurity, particularly employers’ practice of sending workers home early from scheduled shifts. We then move to a detailed assessment of state laws that require reporting pay, as well as reporting pay guarantees in union contracts and private‐employer practices that attempt to address the problem of work‐hour insecurity. We conclude by considering paths for strengthening such protections in law.     

Horizontal Mergers and Successive Oligopoly

This paper considers a successive oligopoly setting in which a set of upstream firms sell output non-exclusively to a group of downstream firms using a linear tariff. If the concavity of retail demand is constant then the profitability of horizontal merger at either the upstream or the downstream stage is shown to depend on the number of firms in the stage experiencing the merger and not on the number of firms in the other stage. Furthermore, the profitability of merger at either stage is the same as the profitability of merger amongst a set of vertically integrated firms in a setting in which all firms are vertically integrated. Finally, mergers at either stage are shown to reduce the sum of producer and consumer surplus. Moreover the negative effects of merger on surplus are unambiguously increased by increases in concentration in the merging stage and ambiguously affected by increases in concentration in the non-merging stage.JEL classification: L10, L20, L40     

Calling circles: network competition with nonuniform calling patterns

We introduce a flexible model of telecommunications network competition with nonuniform calling patterns, accounting for the fact that customers tend to make most calls to a small set of similar people. Equilibrium call prices are distorted away from marginal cost, and competitive intensity is affected by the concentration of calling patterns. Contrary to previous predictions, jointly profit‐maximizing access charges are set above termination cost in order to dampen competition if calling patterns are sufficiently concentrated. We discuss implications for regulating access charges as well as on‐ and off‐net price discrimination.     

Heterogeneous Firms,Globalisation and the Distance Puzzle

Despite the strong pace of globalisation, the distance effect on trade is persistent or even growing over time (Disdier and Head, 2008). To solve this distance puzzle, we use the recently developed gravity equation estimator from Helpman et al. (2008) (HMR henceforth). Using three different data sets, we find that the distance coefficient increases over time when ordinary least squares (OLS) is used, while the non‐linear estimation of HMR leads to a decline in the distance coefficient over time. The distance puzzle, thus, arises from a growing bias of OLS estimates. The latter is explained by an increase in the importance of the bias from omitting the number of heterogeneous exporting firms relative to the bias from omitting zero trade flows. Furthermore, we show that including zero trade flows cannot solve the distance puzzle when using HMR. The HMR estimates are strongly correlated with the time pattern in freight costs reported by Hummels (2007).     

Learning by Consumers in the Demand for Japanese Cars

This paper provides an empirical analysis of the impact of consumer learning over time on the demand for Japanese cars, using both a multinomial logit demand model and the Berry–Levinsohn–Pakes demand model ( Econometrica , vol. 63, 1995, 841–90). The data suggest that learning about particular models, manufacturers, and Japanese cars as a group had a positive impact on the demand for individual models during the 1970s and 1980s.