Since 1986 the United States has made considerable efforts to curb illegal immigration. This has resulted in an increase in migration costs for undocumented immigrants. More stringent border enforcement either deters potential illegal immigrants from coming to the U.S., or moves the point of...

We use a model of human capital investment and activity choice to explain facts describing gender differentials in the levels and returns to human capital investments. These include the higher return to and level of schooling, the small effect of healthiness on wages, and the large effect of...

This paper shows how a shorter fecundity horizon for females (a biological constraint) leads to age and educational disparities between husbands and wives. Empirical support is based on data from a natural experiment commencing before and ending after China's 1980 one-child law. The results...

This short essay surveys recent literature on the competitive saving motive and its broader economic implications. The competitive saving motive is defined as saving to improve one's status relative to other competitors for dating and marriage partners. Here are some of the key results of the...

The prevailing gender preferences in employment opportunities in Nigeria's civil service are worrisome. Although by the virtue of Nigeria's population, the potential female labour force is about 50% and the national labour force participation rate is about 67.4%, the male participation rate is...

This study estimates random effects and difference-in-difference-in-differences models to examine the initial impacts of COVID-19 on the employment and hours of unincorporated self-employed workers using monthly panel data from the Current Population Survey. For these workers, effects were...

This paper provides new evidence of the effects of child gender on parental labor supply and earnings in two-parent families with one child. Using data from the China Health and Nutrition Survey, I document a son premium on the intensive margin of both paternal and maternal labor supply. Parents...

This study examines the initial impact of COVID-19 shutdowns on the employment and hours of unincorporated self-employed workers using data from the Current Population Survey. Although the shutdowns decreased employment and hours for all groups, differential effects by gender, couple status, and...

It follows from a number of theoretical models of marriage that the scarcer women are relative to men, i.e. the higher the sex ratio, the less married women are likely to participate in the labor force. Such sex ratio effects may be stronger among less educated women. These predictions are...

A small number of recent empirical studies for several countries has reported the intriguing finding that the "advantage" previously enjoyed by men in respect of training incidence and reported in earlier work in the literature has been reversed. The present paper explores the sources of the...