The Impact of Income Taxation on the Labor Supply of Part-time and Full-time Workers

This paper estimates the effect of income taxation on the labor supply of part-time and full-time workers in the United States. Using a model that incorporates the endogeneity of the net wage rate and the virtual income, and correcting for self-selection into part-time and full-time jobs, the results indicate that part-time workers are relatively more responsive to changes in income tax than full-time workers. Estimated wage elasticities are relatively larger for part-time than for full-time workers.The simulation results indicate that income tax has a disincentive effect on both part-time and full-time workers, with part-time and full-time workers reducing their labor supply by 0.87 and 0.58 hours, respectively, if a 5% tax is imposed. However, the percentage reduction in hours of work is very small, and a tax policy may have little effect on the labor supply of workers.The results seem to suggest that female and black part-time workers are more likely to drop out of the labor force at higher levels of income tax. It also tests the hypothesis that the labor supply behavior of parttime and full-time workers differs.The test results indicate that the determinants of the labor supply of part-time workers are different from those of full-time workers. It is noted that there is a significant difference between the labor supply of male part-time and female parttime workers, as well as between the black part-time and white part-time workers. In order to reduce voluntary unemployment in market activities among married females and blacks, the government can encourage part-time work by sponsoring legislation or instituting a scheme that will allow part-time workers to pay relatively less in payroll taxes.     

Discrimination and Skill Differences in an Equilibrium Search Model*

We analyze an equilibrium search model with three sources for wage and unemployment differentials among workers with the same (observed) human capital but different appearance (race): unobserved productivity, search intensities, and discrimination due to an appearance‐based employer disutility factor. We show that the structural parameters are identified using labor market survey data. Estimation results for a black and white high school graduate sample imply: black productivity is 3.3% lower than white productivity; the employer's disutility factor is 31% of the white's productivity level; and 56% of firms have a disutility factor toward blacks.     

The role of supervisors in the determination of wages and wage gaps

This article considers labour market discrimination by supervisors as a potential contributor to racial and gender wage gaps. Empirical analysis reveals evidence that all workers, except Hispanic males, earn significantly higher hourly wages when working for a supervisor of the same race and sex as themselves. Furthermore, the results suggest that sex has a larger impact on wages than race for workers with white supervisors, while race has a larger impact on wages than sex for workers with minority supervisors. Based on past research, we theorize that the degree of labour discrimination workers face may also be dependent upon the location and size of the firm in which they are employed. However, decomposing the samples by firm location and size suggests that these two factors cannot adequately explain the observed matched supervisor–worker wage effects, which supports the notion that these wage effects are largely driven by factors other than supervisor discrimination.     

WEARING OUT YOUR WELCOME: EXAMINING DIFFERENTIAL MEDICAID ELIGIBILITY OF NEW ENTRANTS AND CONTINUING RECIPIENTS

Until recently, states were permitted to have different “new entrant” and “continuing recipient” income limits for parental Medicaid eligibility by implementing income disregards that changed with spell length. Some states utilized this option—either tightening income limits for the same family over time or loosening them. In this article, we construct a theoretical model of utility‐maximizing workers facing different time‐dependent eligibility thresholds to predict the Medicaid participation and employment behavior of workers with varying wage levels. The model reveals some inter‐temporally perverse incentives created by linking eligibility thresholds to Medicaid duration. Then, we empirically test these predictions using the Survey of Income and Program Participation and a unique compilation of state‐by‐family size Medicaid thresholds for both new and continuing recipients. We find that patterns of Medicaid participation and spell duration are consistent with the predictions of our model. There is also evidence that the individuals predicted by our model to lower their work hours may supply fewer hours of labor. As of January 2014, the Affordable Care Act disallows time‐varying income disregards; our findings suggest that states previously using this strategy will experience an adjustment in Medicaid caseloads and possibly labor market outcomes because of the change. (JEL H4, I1, J2)     

Flexible Hours,Workplace Authority,and Compensating Wage Differentials in the US

The theory of compensating differentials suggests that workers with flexible schedules will earn less than other workers. Some authors have also contended that the concentration of women in jobs with flexible hours explains a significant part of the gender pay gap. This paper uses data from the US subset of the Comparative Project in Class Analysis to test these hypotheses. These data first indicate that, contrary to popular wisdom, women workers do not have more flexible schedules than men. Second, the really striking differential is by race: black workers have much more rigid schedules than white workers. Third, workers with more authority at the workplace typically have more flexibility than subordinate workers. Finally, the data show that any compensating differentials for flexible hours are small and are offset by returns to workplace authority.     

Gender gaps across countries and skills: Demand,supply and the industry structure

The comovement between gender gaps in hours and wages across countries and skills reveals the presence of net demand forces shaping gender differences in labor market outcomes. This paper links the rich pattern of variation in gender gaps to the process of structural transformation. Based on a stylized, multi-sector equilibrium model, we illustrate that the gender bias in labor demand can be decomposed into measurable within- and between-industry components. Using comparable micro data across countries, we find that international differences in the industry structure explain more than eighty percent of the overall variation in labor demand between the U.S. and all other countries in our sample, and roughly one third of the overall cross-country variation in wage and hours gaps.     

最低工资对农民工劳动供给存在空间溢出效应吗？——基于空间面板Durbin模型的分析

通过空间面板杜宾模型分析最低工资对农民工劳动供给是否存在空间溢出效应。研究发现,最低工资对农民工劳动供给不存在空间溢出效应,主要表现为最低工资对农民工的就业不存在显著的空间溢出效应,对农民工工作时间存在显著消极的空间溢出效应。最低工资对女性农民工就业呈现出倒"U"型的影响,对男性农民工就业的影响不显著;最低工资对女性农民工和男性农民工工作时间呈现出倒"U"型的影响。     

A quantitative theory of the gender gap in wages

This paper measures how much of the gender wage gap over the life cycle is due to the fact that working hours are lower for women than for men. We build a quantitative theory of fertility, labor supply, and human capital accumulation decisions to measure gender differences in human capital investments over the life cycle. We assume that there are no gender differences in the human capital technology and calibrate this technology using wage–age profiles of men. The calibration of females assumes that children involves a forced reduction in hours of work that falls on females rather than on males and that there is an exogenous gender gap in hours of work. We find that our theory accounts for all of the increase in the gender wage gap over the life cycle in the NLSY79 data. The impact of children on the labor supply of females accounts for 56% and 45% of the increase in the gender wage gap over the life cycle among non-college and college females, while the rest is due to the exogenous gender differences in hours of work.     

Long-run costs of piecemeal reform: Wage inequality and returns to education in Vietnam

In this paper, we examine changes in wage structure and wage premia during Vietnam’s transition from command to market economy. Relative to other work in this literature, our paper is unique in that we identify the policies that lead to such changes. By examining skill premium trends along the two dimensions of particular importance to the transition—state or non-state firms, and traded or non-traded industries—we are able to separate the contribution of external liberalization to wage growth and rising skill premia from that of domestic labor market reforms, and to examine potential interactions between the two types of reform. The results point to the high cost of incomplete reform in Vietnam. Capital market segmentation creates a two-track market for skills, in which state sector workers earn high salaries while non-state workers face lower demand and lower compensation. Growth is reduced directly by diminished allocative efficiency and reduced incentives to acquire education, and indirectly by higher wage inequality and rents for workers with access to state jobs.     

Hours Worked in Europe and the United States: New Data,New Answers*

We use national labor force surveys from 1983 to 2015 to construct hours worked per person on the aggregate level and for different demographic groups for 18 European countries and the United States. We apply a harmonization procedure to measure hours worked consistently across countries and over time. In the recent cross‐section, Europeans work 14 percent fewer hours than US Americans. Differences in weeks worked and in the educational composition each account for one quarter to one half of this gap. In addition, lower hours worked per person than in the United States are driven by lower weekly hours worked in Scandinavia and Western Europe, but by lower employment rates in Eastern and Southern Europe.     

Does Price Stability Exacerbate Labour Market Rigidities in the EMU?

How will the commitment to price stability affect labour market rigidities in the European Monetary Union? I explore a model where firms choose between fixed wage contracts (where the employer cannot lay off the worker, and the wage can only be changed by mutual consent), or contracts where employment is at will, so that either party may terminate employment (with strong similarities to temporary jobs). A fixed wage contract provides better incentives for investment and training, while employment at will facilitates efficient mobility. Inflation erodes the real value of a fixed contract wage over time, and badly matched workers are more likely to quit for other jobs. Disinflation has opposing effects on labour market rigidity: fixed wage contracts become more rigid in real terms, but fewer firms will choose fixed wage contracts.     

The labor supply of fixed-wage workers: Estimates from a real effort experiment

Fixed-wage workers comprise the bulk of the labor force and yet little is known about how they respond to changes in their wage. Given recent interest in theories of reciprocity and intrinsic motivation and their implications for effort provision, the neoclassical prediction seems less obvious today. To better understand the motivation of these workers, I estimate their labor supply using a real effort experiment. Two results stand out. First, no one theory seems to fit the pooled data. On average, people work considerably harder than the minimum but they do not respond to changes in the wage. Second, pooling the data is deceptive because there seem to be distinct types with differing responses to the wage. Most workers can be classified as reciprocal or intrinsically motivated and, indeed, these types respond as theory would predict: reciprocators return wage gifts with increased effort and extrinsic incentives crowd out motivation for intrinsic workers.     

Globalization,welfare, and the attitudes toward higher education

In this paper we study how the attitudes toward higher education may affect labor market outcomes in the context of globalization. In particular, we show that different educational attitudes are responsible for differences in the wage differential among countries. Using a matching model with two types of workers and firms, we find that there is a trade-off between the wage differential and the workers’ welfare, namely, that an economy that is less willing to educate itself will display a lower wage differential but will lose in terms of welfare. Moreover, from a policy perspective, we show that the negative effects on welfare due to this disinclination to study can be offset by increased labor market flexibility. All things considered, policy makers ought to keep in mind that both a positive attitude toward higher education and labor market flexibility, can lead to improved overall performance in this increasingly globalized world.     

The Minimum Wage and the Cause of Democracy

Too often the minimum wage is conceived of as a small policy measure that will be of benefit to only a small segment of the labor market while imposing costs on another segment of the labor market. Unexplored, however, are the larger philosophic questions that such a small measure may actually raise. One such issue is the relationship between the minimum wage and democratic principles. In this paper I argue that the minimum wage furthers the ends of democratic society in that low-wage workers may achieve greater equality of standing with their piers to the extent that income inequality is at all lessened; their autonomy as individuals is enhanced through higher wages, which in turn enables them to claim the benefits of citizenship and participate more effectively in the democratic process; and it fosters greater economic development in that it raises the overall structure of a region and perhaps the productivity of that region.     

Labor Market Institutions, Wages, and Investment: Review and Implications

Labor market institutions, via their effect on the wage structure,affect the investment decisions of firms in labor markets withfrictions. This observation helps explain rising wage inequalityin the US, but a relatively stable wage structure in Europein the 1980s. These different trends are the result of differentinvestment decisions by firms for the jobs typically held byless skilled workers. Firms in Europe have more incentives toinvest in less skilled workers, because minimum wages or unioncontracts mandate that relatively high wages have to be paidto these workers. I report some empirical evidence for investmentsin training and physical capital across the Atlantic, whichis roughly in line with this theoretical reasoning. (JEL E22,E24, J23, J24, J31)     

Fields of Study and the Earnings Gap by Race in Brazil

Workers with tertiary education in Brazil earn three times more than those with a lower level of schooling. Thus, the attainment of a bachelor's or graduate degree by a black worker usually provides important benefits at the individual level. However, an educational improvement of this type does not assure equal labor market outcomes relative to white workers with the same level of education. The labor earnings differential by race in Brazil is high even among individuals who completed at least a bachelor's degree. This paper investigates this labor earnings gap, emphasizing the unequal distribution of whites and blacks across fields of study. Evidence indicates that disparities in the distribution of racial groups across fields of study help explain 18% of the total median earnings differential in 2000 and 33% in 2010, accounting for most of the gap between white and black workers due to characteristic effects in this latter period.     

Market wages,reservation wages,and retirement decisions

The paper is an empirical cross-section study of the retirement decisions of American white men between the ages of 58 and 67, predicated on the theoretical notion that an individual retires when his reservation wage exceeds his market wage. Reservation wages are derived from an explicit utility function in which the most critical taste parameter is assumed to vary both systematically and randomly across individuals. Market wages are derived from a standard wage equation adjusted to the special circumstances of older workers. The two equations are estimated jointly by maximum likelihood, which takes into account the potential selectivity bias inherent in the model (low-wage individuals tend to retire and cease reporting their market wage). The model is reasonably successful in predicting retirement decisions, and casts serious doubt on previous claims that the social security system induces many workers to retire earlier than they otherwise would. The normal effects of aging (on both market and reservation wages) and the incentives set up by private pension plans are estimated to be major causes of retirement.     

The effects of differences in year‐round,full‐time labor market experience on gender wage levels in the United States

This paper utilizes longitudinal information on annual hours worked to construct a more robust measure of labor market experience for young workers in the USA. This enhanced experience measure is then used to assess recent gender wage differentials. Our experience measure yields a dramatic improvement in the ability of standard earnings regressions to explain the variation in wages across individuals, especially for young women. In addition, our results indicate that approximately one‐fourth of the gender difference in average wages is attributable to the higher work experience levels of men.     

No End to the Racial Wage Hierarchy in South Africa?

The South African apartheid system formally ended with the election of the African National Congress at the first all-race elections held in 1994. As a result, racist policies such as color barring, that particularly hindered the advancement of black workers throughout the apartheid period, are no longer legal. Yet the legacy of apartheid may endure as a result of both the persistence of racial differences in human capital attributes and the possible continuation of discriminatory practices within employment. In this paper the authors examine the evolution of the racial wage hierarchy in the early post-apartheid era against the background of the long-term decline in racial wage disparities observed over the last years of the apartheid regime. They find evidence that the position of black workers between 1995 and 1997 actually deteriorated relative to the overall geometric mean wage, while that of colored, Asian, and white workers improved.     

Flexibility for Whom? Control over Work Schedule Variability in the US

Abstract

According to the May Work Schedules and Work at Home Supplement of the Current Population Survey in 1997, 2001, and 2004, the proportion of employees in the United States with variable starting and/or stopping times who do not control their schedules has increased rapidly since the late 1990s. This category included one out of nine civilian employees ages 18–65 in 2004. These jobs have increased rapidly within industries and occupations. The incumbents of these jobs are more likely to be men, black, and immigrant; white, US-born women' chances of holding such jobs are greatly reduced by their responsibility for children. These findings identify a growing tendency to structure jobs so as to exacerbate the conflict between family work and paid employment, and to reinforce the gender division of labor between home and wage labor, especially in the most disadvantaged communities within the US.