EXPLAINING THE SPREAD OF TEMPORARY JOBS AND ITS IMPACT ON LABOR TURNOVER

This article provides a simple model that explains the choice between permanent and temporary jobs. This model, which incorporates important features of actual employment protection legislations neglected by the economic literature so far, reproduces the main stylized facts about entries into permanent and temporary jobs observed in Continental European countries. We find that job protection has very small effects on total employment but induces large substitution of temporary jobs for permanent jobs, which significantly reduces aggregate production.     

Learning to trust strangers: an evolutionary perspective

What if living in a relatively trustworthy society was sufficient to blindly trust strangers? In this paper we interpret generalized trust as a learning process and analyse the trust game paradox in light of the replicator dynamics. Given that trust inevitably implies doubts about others, we assume incomplete information and study the dynamics of trust in buyer-supplier purchase transactions. Considering a world made of ??good?? and ??bad?? suppliers, we show that the trust game admits a unique evolutionarily stable strategy: buyers may trust strangers if it is not too risky to do so. Examining the situation where some players may play either as trustor or as trustee we show that this result is robust.     

Asia's ‘little divergence’ in the twentieth century: evidence from PPP-based direct estimates of GDP per capita, 1913–69

This article uses expenditure-based purchasing power parities (PPPs) to estimate GDP per capita in comparable prices for 12 Asian countries for six benchmark years during the period 1913–69. The article finds that in 1913 levels of real GDP per capita in several countries were comparable to those in Japan. GDP per capita in Japan and other Asian countries diverged during and after the First World War. The article questions whether Asia's ‘little divergence’ between Japan and other Asian countries dates back to the late eighteenth century. It draws attention to the different resource endowments of Japan, China, and India compared to other Asian countries, and their implications for the development trajectories of Asian countries. The article demonstrates that using historical PPP estimates yields estimates of GDP per capita that diverge from those based on retropolations of the single 1990 PPP-converted benchmark year. It concludes that historical estimates of PPPs are needed to confirm analyses of comparative economic performance based on available GDP per capita data.     

Gender and Promotions: Evidence from Academic Economists in France*

The promotion system for French academic economists provides an interesting environment to examine the promotion gap between men and women. Promotions occur through national competitions for which we have information both on candidates and on those eligible to be candidates. Thus, we can examine the two stages of the process: application and success. Women are less likely to seek promotion, and this accounts for up to 76 percent of the promotion gap. Being a woman also reduces the probability of promotion conditional on applying, although the gender difference is not statistically significant. Our results highlight the importance of the decision to apply.     

Product Unbundling in the Travel Industry: The Economics of Airline Bag Fees

This paper provides theory and evidence on airline bag fees, offering insights into a real‐world case of product unbundling. The theory predicts that an airline's fares should fall when it introduces a bag fee, but that the full‐trip price (the bag fee plus the new fare) could either rise or fall. The empirical evidence presented in the paper provides strong confirmation of the first prediction. The data also suggest that the average fare falls by less than the bag fee itself so that the full price of a trip rises for passengers who choose to check bags.     

Regulation of relationships between heterogeneous farmers and an aquifer accounting for lag effects

Many environmental problems are due to damage caused by pollutants that accumulate with a time lag following their emission. In this study, we focus on nitrates used in agriculture, which can pollute groundwater many years after their initial application. A dynamic optimal control problem with heterogeneous farmers is proposed. The usual structural parameters such as the discount rate, the natural clearing rate and the lagged time interval between the occurrence of soil‐level pollution and the impact on groundwater are taken into account. We also examine pollution as caused by a continuous set of farms characterised by their individual performance index and by their individual marginal contribution to the pollution. The issue is further investigated by taking account of change in the information context, successively related to perfect information and to asymmetric information. As a result, when the delay between the spreading of N‐fertilizer and the impact on the aquifer increases, that is, the longer the lag, the steady‐state pollution stock and the steady‐state shadow price of the stock both increase. Moreover, we show that the optimal regulation may require a decreasing amount of fertilizer over time, even in the case of initial underpollution.     

Means‐Tested Long‐Term Care and Family Transfers

One of the pervasive problems with means‐tested public long‐term care programs is their inability to prevent individuals who could afford private long‐term services from taking advantage of public care. They often manage to elude the means‐test net through ‘strategic impoverishment’. We show in a simple model how this problem comes about, how it affects welfare and how it can be mitigated.     

On the existence of a regulated production function

This paper examines the generalization of the regulated production function. It characterizes the set of admissible regulatory constraints that are compatible with the existence of a regulated production function in a sufficiently weak framework to encompass the usual rate-of-return constraints à la Averch and Johnson and value constraints.     

RESPONSES OF ECONOMIC SYSTEMS TO ENVIRONMENTAL CHANGE: PAST EXPERIENCES

Current discussions of climate change are overly focused on the science underpinning environmental impact, with little attention to socioeconomic consequences. The economics of environmental change in particular is insufficiently informed by the lessons that past experiences can yield. Drawing on case studies from Europe and Asia, this special issue underlines the importance of historical context, as well as markets, institutions, technology, and the role of international trade in understanding how economic systems have responded to environmental changes. Past economies have responded dynamically to environmental change rather than simply constrained deterministically by the climatic and ecological events that have engulfed them.