Using a wide array of examples from the literature and from original estimates, this essay examines the pitfalls that make good empirical research in labor economics as much art as science. Appropriateness and cleanliness of data are considered, as are problems of extreme observations and...

Two striking facts describe work timing in the United States: a lower propensity to work evenings and nights in large metropolitan areas, and a secular decline in such work since 1973. One explanation is higher and possibly increasing crime in large areas. I link Current Population Survey data...

We know that earnings inequality has increased sharply in the United States since the late 1970s, but there has been no evidence on the changing inequality of nonmonetary aspects of work nor on how any such changes are related to changes in earnings. I begin by studying patterns of interindustry...

A precondition for the absence of labor-market competition between immigrants and natives is that they differ in their willingness to accept work that offers different amenities. The implications of a model embodying this assumption are that immigrants will be observed experiencing inferior...

The incidence of evening and night work declined sharply in the United States between the early 1970s and the early 1990s, while the fraction of work performed at the fringes of the traditional regular working day grew. The secular decline in evening and night work did not result from industrial...

This study uses data for the U.S. from the May 1991 CPS and for Germany from the 1990 wave of the Socioeconomic Panel (GSOEP) to analyze when people work during the day and week. The evidence shows: 1) Work in the evenings or at night is quite common in both countries, with around 7 percent of...

Economists' productivity, as measured by publication in leading journals, declines very sharply with age. Additional evidence shows that this is a rational response to economic incentives and/or changing physical or mental abilities: There is no difference by age in the probability that an...

I develop a model with the path of labor-market outcomes exhibiting hysteresis depending on prior labor-market policy. The results suggest that attempts to transfer policies across economies lead to surprising results even if current economic outcomes in the countries appear similar. Examples of...

Most models of dynamic labor demand are written in terms of costs of adjusting employment (net adjustment costs). A few are based on the costs of hiring and firing (gross adjustment costs). This study derives several models containing both types of adjustment costs. A dynamic-programming model...

The paper demonstrates the general difficulty of inferring the structure of adjustment costs from aggregated, including industry data, except in the unlikely case that costs are symmetric and quadratic at the micro level. The implications of this difficulty for cross-national comparisons of...