Understanding the Workweek of Foreign Born Workers in the United States

I analyze the length of the workweek of foreign-born workers in the U.S. I concentrate on workers supplying long hours of work − 50 or more weekly hours and document that immigrants are less likely than natives to work long hours. Surprisingly, these differences are greatest among highly educated and salary paid workers, and persists even after conditioning for demographic characteristics. I explain these differences with two within occupation characteristics. First, relative to natives, immigrants are less likely to supply long work weeks if they work in occupations where the immigrant-native earnings differential is big. Second, immigrants are also less likely to supply long work weeks when they work in occupations with a wide dispersion of earnings. This second result is important, because the occupation dispersion of earnings has been used to characterize changes of the worker's earnings over the worker life cycle (Bell and Freeman, 2001; Kuhn and Lozano, 2008), and a good measure of the incentives to supply long hours of work.hours of work, immigrants

The Expanding Workweek? Understanding Trends in Long Work Hours Among U.S. Men, 1979-2004

According to Census and CPS data, the share of employed American men regularly working more than 48 hours per week is higher today than it was 25 years ago. Using CPS data from 1979 to 2006, we show that this increase was greatest among highly educated, highly-paid, and older men, was concentrated in the 1980s, and was largely confined to workers paid on a salaried basis. We rule out a number of possible explanations of these changes, including changes in measurement, composition effects, and internet-facilitated work from home. Among salaried men, increases in long work hours were greatest in detailed occupations and industries with larger increases in residual wage inequality and slowly-growing real compensation at 'standard' (40) hours.

The Unknown Immigration: Incentives and Family Composition in Inter-Country Adoptions to the United States

Children adopted from abroad are an immigrant group about which little is known. According to the U.S. Census more than one and a half million children living in the U.S. are adopted, with fifteen percent of them born abroad. In fact more than twenty thousand adopted orphans from abroad enter the country each year. The families who adopt these orphans are mostly white, wealthy, and well educated (Kossoudji, 2008). What are the characteristics of children who are adopted from abroad and what incentives drive families to adopt them? In this paper we use the 2000 census to illuminate the landscape of international adoption. We address three issues: 1) How do the demographic characteristics of the children adopted from abroad change as other countries open and shut the door to inter-country adoptions, changing the supply of available children? 2) U.S. born parents and foreign-born parents may have different incentives to adopt. How are these incentives reflected in the characteristics of the children they adopt? 3) What explains differences in the estimates of foreign-born adopted children in the Census and the number of visas granted by the State Department?international adoption, immigrant children

The Labor Market Value to Legal Status

We present estimates of the effect of legal immigration status on earnings of undocumented workers. Our contribution to the literature centers on a two-step procedure that allows us to first estimate the legal status of an immigrant and then estimate the effect of the Immigration Reform and Control Act (IRCA) on immigrants’ labor market outcomes using a triple difference approach. From a sample of young to middle aged Mexican men, our results show that IRCA causes a 20 log point increase in labor market earnings of Mexican immigrants over the long run, and that nearly all of this increase is in the occupational wage. These results suggest that the primary disadvantage for undocumented workers is the type of jobs that they are able to obtain. We estimate the model for immigrants from other countries not benefiting from IRCA to the extent that Mexican immigrants did, and find no systematic bias towards positive and significant results.immigration, legal status, immigration reform

Mexican Immigrants, the Labor Market and the Current Population Survey: Seasonality Effects, Framing Effects, and Sensitivity of Results

In this paper we compare estimates of immigrants’ labor supply assimilation profiles using the Current Population Survey Annual Demographic Files (March ADS) and the Current Population Survey Outgoing Rotation Groups (ORGs). We use a measure that is seemingly consistent across both surveys: usual weekly hours of work in the main job. Our results indicate that the two surveys produce dramatically different estimates of the change in average hours of work as immigrants’ years in the United States increase: estimates from the March ADS predict much steeper hour’s assimilation profiles than do estimates obtained from the ORGs. We argue that these differences stem from two separate factors that differentiate the data. First, the ADS and ORG frame the usual hours worked question differently. Also, differences in the timing of the surveys may produce seasonality effects that differentially affect the composition of recent and earlier migrants, thereby changing assimilation profiles.immigration, March CPS, CPS outgoing rotations, hours of work

Empirical Methods in the Economics of International Immigration

In this chapter we provide a brief overview of the main empirical tools used by economists to study international migration. We begin by exploring the three broad research areas that economists examine when researching immigration. We then explore the strengths and shortcomings of the standard methods, and highlight new methods that will likely become more common in future work in the field. We divide the most common tools used in the empirical literature into four broad categories: (1) Ordinary Least Squares and Inference, (2) Difference-in-Difference Estimation, (3) Instrumental Variables Techniques, and (4) Recent Developments and Distributional Estimators. We use recent empirical work to highlight and explain each method, and provide sources for researchers interested in further information on each topic.empirical methods, immigration

Border Enforcement and Selection of Mexican Immigrants in the United States

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 crossing for illegal immigrants from traditional crossing routes to more inhospitable routes. These changes are likely to place a heavier burden on illegal immigrant women as they are more likely to be kidnapped, smuggled, or raped when crossing illegally. If migration costs are not the same for all migrants, higher migrating costs may result in a change in the number and in the composition of immigrants to the United States. In the face of higher migration costs, only immigrants with relatively high expected benefits of migration will choose to migrate. Based on our theoretical model, we test for three empirical results that are associated with a stronger selection of immigrant women from Mexico relative to men as a result of higher migration costs: 1) A decrease in the relative flow of older and highly educated undocumented immigrant women relative to men; 2) A change in the skill composition of immigrant women to men; and 3) An increase in the average earnings of those groups most affected by increased migration costs. Using data from the 1990, 2000 Decennial Census, and from the 2006-2008 American Community Survey we empirically confirm these predictions.selection, gender, immigration, border enforcement

Especies de hongos descritas en el libro «Setas para todos» recolectadas en Cataluña

Espècies descrites en el llibre "Setas para todos" recol·lectades a Catalunya. En aquest article es donen a conèixer les dades corològiques de les 93 espècies que es troben representades i descrites en el llibre "Setas para todos" i que han estat recol·lectades a Catalunya, amb algun comentari addicional de les espècies més interessants.Especies descritas en el libro "Setas para todos" recolectadas en Cataluña. Se dan en este artículo los datos corológicos de las 93 especies que estan representadas y descritas en el libro "Setas para todos" y que han sido recolectadas en Cataluña, con algún comentario adicional sobre las especies que consideramos más interesantes.Species of fungi collected in Catalonia and included in the field guide Setas para todos. Chorologic, ecologic and herbarium data regarding the species collected in Catalonia and included along with descriptions and macroscopic and microscopic colour photographs in the recently published field guide by the author. Some comments about the species considered to be of interest are added