Investment in human capital and gender wage differences: evidence from the NLSY

This paper uses data from the National Longitudinal Survey of Youth (NLSY) to investigate gender differences in returns to various forms of human capital. Since the NLSY includes relatively detailed information regarding on- and off-the-job training, we place special emphasis on measuring gender differences in the incidence of and returns to formal post-school training. Also considered is the role of nonhuman capital factors such as industry and occupation in explaining the wage gap. It is found that about 60% of the gender wage gap in the sample is explained by mean differences in individual characteristics and market circumstances. This suggests a smaller role for discrimination in explaining the wage gap than previous research has found. The research indicates that training does not affect the gender wage gap. Also it is found that there is no statistically significant difference in the rate of return to other measures of human capital for women versus men. Our research suggests that the largest factors contributing to the wage gap are differences in the stocks of human capital for men and women, and differences in the distributions of men and women across industries and occupations.     

Schooling, Training, Growth and Minimum Wages

We examine how the long-run growth performance of an economy is affected by a labor market distortion. In our model, growth occurs through skill formation, and skills are generated through schooling and training of unskilled workers. We analyze how a minimum wage legislation affects long-run growth. In general, the effects are ambiguous. The reason is that while a minimum wage discourages training, it also encourages schooling. The net effect then depends on whether training or schooling dominates the long-run increases in labor productivity.
JEL classification : I 20, J 31, O 40     

Are Minimum Wages to Blame for Informality in the Labour Market?

The paper estimates the impact of the minimum wage on formal and informal employment in a developing country combining the use of aggregate time series data with modern time-series methods. The analysis is carried out for the case of Brazil over the period 1982–2002. The hypothesis under investigation is that minimum wage rises price workers out of the formal labour market and into the informal sector. The modelling strategy involves the estimation of the long-run structure as well as the short-term dynamics of employment equations in which the minimum wage enters as an explanatory variable.JEL codes: J23 J51 C32     

Firm ownership and internal labour practices in a transition economy

One feature common to many post‐socialist transition economies is a relatively compressed wage structure in the state‐owned sector. We conjecture that this compressed wage structure creates weak incentives for work effort and worker skill acquisition and thus presents adverse consequences for the entire transition economy if a substantial portion of the labour force works in the state sector. We explore firm wage incentives and worker training, as well as other labour practices and outcomes, in a transition setting with matched firm and worker data collected in one of the largest provinces of Vietnam – Ho Chi Minh City. The Vietnamese state sector exhibits a compressed wage distribution in relation to privately owned firms with foreign ownership. State wage practices stress tenure over worker productivity and their wage policies result in flatter wage–experience profiles and lower returns to education. The state work force is in greater need of formal training, a need that is in part met through direct government financing. In spite of the opportunities for government financed training and at least partly due to inefficient worker incentives, state firms, by certain measures, exhibit lower levels of labour productivity. The private sector comparison group to state firms for all of these findings is foreign owned firms. The internal labour practices of foreign firms are more consistent with a view of profit‐maximizing firms operating with no political constraints. This is not the case for Vietnamese de novo private firms that exhibit much more idiosyncratic behaviour and whose labour practices are often indistinguishable from state firms. The exact reasons for this remain a topic of on‐going research yet we conjecture that various private sector constraints, including limited access to formal capital, play an important role.     

The Effect of Further Training on Wage Growth in West Germany, 1984–1992

In this paper, we use data from the German Socio-Economic Panel (GSOEP) to examine the effect of further training on wage growth in West Germany for the period 1984 to 1992. After controlling for the endogeneity of the training participation decision and the presence of unobserved fixed effects, we estimate a wage growth equation which reveals that further training positively affects wage growth. However, significant differences regarding the effectiveness of further training exist between male and female workers. Our results complement the findings of previous studies supporting the view that further training enhances gender inequality in the German labour market.     

Countercyclical or procyclical real wages? A disaggregate explanation of aggregate asymmetry

The time-series analysis of disaggregated data for a sample of 28 private industries verifies the prevalence and sources of asymmetry in aggregate data. The evidence indicates that asymmetry in the cyclical behavior of the real wage is widespread across the U.S. economy. The reduction in the real wage during recessions appears pronouncedly larger compared to the increase in the real wage during expansions in many industries. Across industries, price inflation increases faster compared to nominal wage inflation in the face of higher demand variability. Price flexibility moderates the increase in the real wage and output growth during expansions. In contrast, prices appear more downwardly rigid compared to the nominal wage in the face of demand variability. Price rigidity exacerbates the reduction in the real wage and output contraction during recessions. The combined evidence supports the implications of the sticky-price explanation of business cycles.First version received: June 2003/Final version received: June 2004The author thanks an anonymous referee for helpful comments on an earlier draft of the paper. The views expressed in this paper are those of the author and should not be interpreted as those of the International Monetary Fund.     

The formal sector wage premium and firm size

We show theoretically that when larger firms pay higher wages and are more likely to be caught defaulting on labor taxes, then large-high wage firms will be in the formal and small-low wage firms will be in the informal sector. The formal sector wage premium is thus just a firm size wage differential. Using data from Ecuador we illustrate that firm size is indeed the key variable determining whether a formal sector premium exists.     

Cross‐Subsidies,and the Elasticity of Informality to Social Expenditures: The Case of Mexico's Seguro Popular

How is the size of the informal sector affected when the distribution of social expenditures across formal and informal workers changes? How is it affected when the tax rate changes along with the generosity of these transfers? In our search model, taxes are levied on formal‐sector workers as a proportion of their wage. Transfers, in contrast, are lump‐sum and are received by both formal and informal workers. This implies that high‐wage formal workers subsidize low‐wage formal workers as well as informal workers. We calibrate the model to Mexico and perform counterfactuals. We find that the size of the informal sector is quite inelastic to changes in taxes and transfers. This is due to the presence of search frictions and to the cross‐subsidy in our model: for low‐wage formal jobs, a tax increase is roughly offset by an increase in benefits, leaving the unemployed approximately indifferent. Our results are consistent with the empirical evidence on the recent introduction of the “Seguro Popular” healthcare program.     

The participation of Russian households in the informal economy: Evidence from the VTsIOM data

This study presents the size and structure of secondary employment in Russia, analyses the determinants of Russian informal secondary employment, and discusses differences between job qualifications in a main job and those in a secondary job. We estimate that 27 percent of Russia’s GDP was produced in the informal economy during 1997–98 and informal secondary employment amounts to about 20 percent of value added produced in the informal economy. We found that the probability of holding an informal secondary job as opposed to a formal one is positively associated with higher wage rates and lower education. However, there is little evidence that low income is correlated with holding an informal secondary job. We also found evidence that an informal secondary job requires lower job qualifications as compared to a formal one. Again, low income is not significant in determining differences between job qualifications in a main job and those in a secondary job. JEL classification: J22, J24, O17, P20.     

The impact of minimum wages on employment of low‐wage workers

This study provides empirical evidence on the impact of a minimum wage increase on employment of workers in the formal sector who have wages below the minimum level in Vietnam. Using the difference‐in‐differences with propensity score matching and the Vietnam Household Living Standard Surveys of 2004 and 2006, the article finds that the minimum wage increase in 2005 reduced the proportion of workers having a formal sector job among low‐wage workers. Most workers who lost formal sector jobs became self‐employed.     

The business cycle of capitalism

In every business expansion the wage share declines because productivity rises faster than hourly wages. As a result, towards the end of expansion the limited wages and salaries cause an insufficient growth of consumer demand, which makes it difficult to realize profits. At the same time costs - including wage costs, material costs and interest costs - are rising, so it is difficult to produce at a profit. Therefore, at the peak of the cycle rising costs and insufficient demand squeeze profits as in a nutcracker, causing a fall in the expected rate of profit, which leads to a business contraction. In every business contraction the opposite trends tend to produce eventual recovery and a new expansion.     

Wage Discrimination in India's Informal Labor Markets: Exploring the Impact of Caste and Gender

Although there has been considerable interest in wage discrimination in India, available studies have largely dealt with formal rather than informal markets that are of little relevance for the poorest people. Focusing on India's informal labor markets leads to three findings of interest. First, gender wage discrimination is larger in informal than in formal labor markets, resulting in losses that are larger than receipts from one of the country's most important safety‐net programs. Second, economic growth will not make gender discrimination in wage labor markets disappear. Finally, contrary to what is found for gender, the hypothesis of no significant wage discrimination based on caste cannot be rejected.     

The extent and cyclicality of career changes: Evidence for the U.K.

Using quarterly data for the U.K. from 1993 through 2012, we document that the extent of worker reallocation across occupations or industries (a career change, in the parlance of this paper) is high and procyclical. This holds true after controlling for workers׳ previous labour market status and for changes in the composition of who gets hired over the business cycle. Our evidence suggests that a large part of this reallocation reflect excess churning in the labour market. We also find that the majority of career changes come with wage increases. During the economic expansion wage increases were typically larger for those who change careers than for those who do not. During the recession this is not true for career changers who were hired from unemployment. Our evidence suggests that understanding career changes over the business cycle is important for explaining labour market flows and the cyclicality of wage growth.     

Has the EMU reduced wage growth and unemployment? Testing a model of trade union behavior

Grüner (2010) argues that the introduction of the European Monetary Union (EMU) led to lower wage growth and lower unemployment in participating countries. According to Grüner, monetary centralization increases the amplitude of national business cycles, which leads to higher unemployment risk. In order to counter-balance this effect, trade unions lower their claims for wage mark-ups, resulting in lower wage growth and lower unemployment. This paper uses macroeconomic data on OECD countries and a difference-in-differences approach to empirically test the implications of this model. Although we come up with some weak evidence for increased business cycle amplitudes within the EMU, we neither find a significant general effect of the EMU on wage growth nor on unemployment.     

A COMPARATIVE STUDY OF TRAINING IN THE PRIVATE AND PUBLIC SECTORS: EVIDENCE FROM THE UNITED KINGDOM AND THE UNITED STATES

Formal training programs are one of the main channels through which workers become more productive and experience wage growth. So far, however, most of the results on the effects of employer‐provided training come from studying the training received by private sector workers only. We extend the literature by identifying and comparing the effects of private‐employer‐provided and public‐employer‐provided training in the United States and the United Kingdom. We address this question using two independent data sets from the British Household Panels Surveys and the American National Longitudinal Survey of Youth of 1979. (JEL J24, J31, J40)     

Firm-sponsored training in regulated labour markets: evidence from Spain

Using data from the 1994 European Community Household Panel Survey, the author examines who receives formal firm-sponsored training in Spain. The author finds that the distribution of firm-sponsored training in the work force is uneven and concentrated among more skilled workers in the upper deciles of the wage distribution. The data show that the likelihood of receiving firm-sponsored training for a low education employee is much lower. Also, the better-educated employees in high wage occupations of the largest establishments have higher probabilities of receiving specific training. Spain has a highly regulated labour market, and the labour market frictions and institutions compress and distort the structure of wages. However, the results suggest that the highly compressed wage structure do not provide firms with the incentive to invest in general training.     

MINIMUM WAGES AND GROSS DOMESTIC PRODUCT

This study is the first to explore the relationship between minimum wage increases and state gross domestic product (GDP). Using data drawn from the Bureau of Economic Analysis (BEA) and the Current Population Survey (CPS) from 1979 to 2012, I find no evidence that minimum wage increases were associated with changes in overall state GDP. However, this null finding masks substantial heterogeneity in the productivity effects of minimum wages across industries and over the business cycle. Difference‐in‐difference‐in‐difference estimates suggest that a 10% increase in the minimum wage is associated with a short‐run 1% to 2% decline in state GDP generated by lower‐skilled industries relative to more highly skilled industries. This differential appears larger during troughs as compared to that during peaks of the state business cycle. (JEL J3, J4, L5)     

Assessing the distributive effects of minimum wage

This paper analyzes the role of Uruguay's sharp minimum wage increases after 2004 amidst the country's slight wage inequality decrease. We found that the minimum wage increase has contributed to the reduction of wage inequality for formal workers mainly. However, we also found a negative impact on employment outside the capital city, Montevideo, and observed a reduction in working hours. These results raise doubts about the effectiveness of minimum wage as a redistribution instrument in developing countries.     

Unobserved Heterogeneity,Job Training and the Employer Size–Wage Effect in Australia

This study attempts to clarify the nature of the employer size–wage effect in Australia by determining the extent to which it can be explained by observed and unobserved quality differences of workers. Our empirical results show that, for men, quality‐adjusted employer size–wage effects are quite small and are mostly driven by lower wages for workers in the smallest firms (fewer than 20 workers). For women, size–wage effects disappear when unobserved quality differences are accounted for. We also find that accounting for differences in the incidence of job training has no effect on the structure of wage differences by employer size.     

Real business cycles, sticky wages or sticky prices? The impact of technology shocks on US manufacturing

In this paper, we examine empirically the predictions of a range of theoretical models which give a prominent role to technology shocks in explaining business cycles. To this end, we estimate (4-digit SIC) industry-level VAR models for US manufacturing using real output, the real wage and utilization corrected measures of technology and labor input. Our results support both sticky-wage DGE and RBC models over sticky-price DGE models. Moreover, they cast some doubt on the importance of technology shocks as propulsive mechanism for business cycles at the industry level.