Knowledge that Transforms

This article investigates the existence of compensating wage differentials across seasonal and long‐term jobs that arise due to anticipated working time restrictions. Using longitudinal information from the Austrian administrative records, we derive a definition of seasonality based on observed regularities in employment patterns. As wages change across seasonal and long‐term jobs for the same individual over time, we can control for individual‐specific effects and use variation in the starting month of seasonal jobs as an exogenous predictor of anticipated unemployment. We find that employers pay, on average, a positive wage differential of about 11% for seasonal jobs.

We use British panel data to investigate single women’s labor supply changes in response to three reforms that affected individuals’ work incentives. We use these reforms to identify changes in labor supply. There is evidence of small hours of work effects for two of such reforms. A third reform in 1999 instead led to a significant increase in single mothers’ hours of work. The mechanism by which the labor supply adjustments were made occurred largely through job changes rather than hours changes with the same employer. This is little overall effect of the reforms on wages.

We study the relation between workers’ skill dispersion and firm productivity using a unique data set of Italian manufacturing firms with individual records on all their workers. Our measure of skill is the individual worker’s effect from a wage equation. We find that a firm’s productivity is positively related to skill dispersion within occupational status groups (production and nonproduction workers) and negatively related to skill dispersion between these groups. Consistently, most of the overall skill dispersion is within and not between firms. These findings are consistent with some recent hierarchical models of the firms’ organizational structure.

The list below specifies doctoral degrees conferred by U.S. and Canadian universities during academic year July 2007 to June 2008. Lists of degree recipients and subject classifications are provided by the university. Note: Dissertations without classifications may be found under “Y Miscellaneous Categories.”

Large fluctuations in energy prices have been a distinguishing characteristic of the U.S. economy since the 1970s. Turmoil in the Middle East, rising energy prices in the United States, and evidence of global warming recently have reignited interest in the link between energy prices and economic performance. This paper addresses a number of the key issues in this debate: What are energy price shocks and where do they come from? How responsive is energy demand to changes in energy prices? How do consumer's expenditure patterns evolve in response to energy price shocks? How do energy price shocks affect U.S. real output, inflation, and stock prices? Why do energy price increases seem to cause recessions but energy price decreases do not seem to cause expansions? Why has there been a surge in the price of oil in recent years? Why has this new energy price shock not caused a recession so far? Have the effects of energy price shocks waned since the 1980s and, if so, why? As the paper demonstrates, it is critical to account for the endogeneity of energy prices and to differentiate between the effects of demand and supply shocks in energy markets when answering these questions.

In this paper, we review the recent literature on global interpersonal income inequality. While all estimates agree that the level is very high, with a Gini of between 0.630 and 0.686 in the 1990s, there is no consensus regarding the direction of change. We discuss methodological issues, including the use of national accounts versus survey-based estimates of mean income (or consumption) and the choice of purchasing power parity exchange rates. Findings of a rise or fall in global income inequality are not robust across different estimation methods and datasets. Given the diversity of estimates and various sources of uncertainty, including gaps and errors in the underlying data, we conclude there is insufficient evidence to determine the direction of change in global interpersonal inequality in recent decades.

The well-known Easterlin paradox points out that average happiness has remained constant over time despite sharp rises in GNP per head. At the same time, a micro literature has typically found positive correlations between individual income and individual measures of subjective well-being. This paper suggests that these two findings are consistent with the presence of relative income terms in the utility function. Income may be evaluated relative to others (social comparison) or to oneself in the past (habituation). We review the evidence on relative income from the subjective well-being literature. We also discuss the relation (or not) between happiness and utility, and discuss some nonhappiness research (behavioral, experimental, neurological) related to income comparisons. We last consider how relative income in the utility function can affect economic models of behavior in the domains of consumption, investment, economic growth, savings, taxation, labor supply, wages, and migration. Every pitifulest whipster that walks within a skin has had his head filled with the notion that he is, shall be, or by all human and divine laws ought to be, “happy.” Thomas Carlyle

In the last decade, economists have produced a considerable body of research suggesting that the historical origin of a country's laws is highly correlated with a broad range of its legal rules and regulations, as well as with economic outcomes. We summarize this evidence and attempt a unified interpretation. We also address several objections to the empirical claim that legal origins matter. Finally, we assess the implications of this research for economic reform.

This paper investigates whether government support can act to increase exporting activity. We use a uniquely rich data set on Irish manufacturing plants and employ an empirical strategy that combines a nonparametric matching procedure with a difference-in-differences estimator in order to deal with the potential selection problem inherent in the analysis. Our results suggest that if grants are large enough, they can encourage already exporting firms to compete more effectively on the international market. However, there is little evidence that grants encourage nonexporters to start exporting.

This paper uses aggregate data to test the implication that capitalpoor individuals favor trade liberalization in poor (capital-scarce) countries and are against it in rich (labor-scarce) countries. Income per capita is used as a proxy for the country capital-labor ratio while political rights is used as a proxy for the capital-labor ratio of the median voter. We analyze the determinants of average tariff rates in a cross section of countries to find that they are negatively associated with both income per capita and political rights, while they are positively, significantly, and robustly associated with their interaction, corroborating our initial hypothesis.