Alternative theories of wage dispersion

We analyze labor market models where the law of one price fails—i.e., models with equilibrium wage dispersion. We begin considering ex ante heterogeneous workers, but highlight a problem with this approach: If search is costly the market shuts down. We then assume homogeneous workers but ex post heterogeneous matches. This model is robust to search costs, and delivers equilibrium wage dispersion. However, we prove that the law of two prices holds: Equilibrium implies at most two wages. We explore other models, including one combining ex ante and ex post heterogeneity which is robust and delivers more realistic wage dispersion.     

The Polish wage inequality explosion1

This paper presents and analyses the sharp increase in hourly wage inequality after 1998 in Poland. The increase was similar in magnitude to the much‐studied increase in British wage inequality during the 1980s. Using data from the Polish Labour Force Survey, we find this increase to be associated with rising wage differentials and within‐group variances at both the upper and lower ends of the wage distribution. These increases are associated with differences in wage‐setting patterns between the public and private sector as well as with the rapid increase in demand for educated labour. One important difference between the sectors is the lack of an impact of local labour market conditions, or wage curve, clearly evident in private sector wages, on public sector wages.     

Why did wage inequality increase? Evidence from urban India 1983–99

Since the start of the economic reform in 1991, there have been serious concerns regarding the increasing income inequality in India. However, no studies have analyzed how and why the inequality has been accelerated. This study aims to fill these knowledge gaps. The main findings are: (1) The wage inequality in urban India started increasing before 1991; (2) The increase in the wage inequality was mainly attributable to increases in the returns to skills; (3) The accelerating skill premium was due to increases in the demand for skilled labor. The demand shift is attributed to skill-biased technological changes within industries.     

Technology and outsourcing: An explanation to the rising wage gap

The recent phenomenon of widening skilled–unskilled wage gap in both North and South has been either explained by a technological change or by increasing trade or globalization. The paper provides a new explanation and emphasizes that it is neither technology nor trade alone but both that have contributed to the widening wage inequality. It argues, using a two-country occupational choice model, that any technological improvement in North results in a rise in the skilled–unskilled wage gap in North via an increase in the productivity of skilled labor followed by a rise in the same in South via trade or the outsourcing activities of the northern firms. The extent of outsourcing or the number of northern firms that outsource jobs to South is endogenously determined in the model. The paper also analyzes some major economic impacts of such a technological upgradation in North on the southern economy.     

Real wage cyclicality in urban China

This paper investigates the cyclical behaviour of real wages in urban China. We find wage pro-cyclicality in the public sector and in small/medium firms, but not in the private sector and in big firms.     

Education, segregation and marital sorting: theory and an application to the UK

This paper presents a model of the intergenerational transmission of education and marital sorting. Parents matter both because of their household income and because their human capital determines the distribution of a child's disutility from making an effort to become skilled. We show that an increase in segregation has potentially ambiguous effects on the proportion of individuals that become skilled in the steady state, and hence on marital sorting, the personal and household income distribution, and welfare. We calibrate the steady state of our model to UK statistics. We find that an increase in the correlation of spouses in their years of education will bring about a small increase in the proportion of skilled individuals when the relative supply of skilled individuals is variable at the family level and a decrease when this supply is fixed. Ex-ante utility (of an unborn individual) increases in the first case and decreases in the second. The welfare effect of increased sorting is negative for unskilled individuals and positive for skilled individuals. Increased segregation always leads to an increase in welfare inequality between skilled and unskilled individuals.     

Permanent versus transitory wage differentials and the inequality-hours hypothesis

This paper disentangles the effect of inequality in permanent and transitory wages on hours worked by, first, estimating the two components for Swedish industries and, second, using the resulting estimates as explanatory variables in an hours-worked equation. Consistent with Bell and Freeman’s (2001) inequality-hours hypothesis, permanent wage differentials are found to have a positive effect on individuals’ hours of work while transitory wage differentials have no effect. However, the analysis also shows that, in estimated hours-worked equations, inequality in observed wages is potentially a good approximation for inequality in permanent wages.     

Labour Mobility and Returns to Experience in Foreign Firms*

This paper uses Finnish linked employer–employee panel data to study whether employees are able to appropriate returns to knowledge accumulated in foreign‐owned firms when moving to domestic firms. The estimates indicate that highly educated employees earn a return to prior experience in a foreign‐owned firm, which is over and above the return to other previous experience. These employees do not appear to pay for the knowledge they accumulate in the form of lower starting wages in foreign‐owned firms.     

The welfare costs of union wage compression

This paper calculates the quantitative significance of the welfare costs of union wage compression. This is done in a dynamic general equilibrium model with overlapping generations where agents choose both schooling (human capital) and assets (physical capital). The labor market in this model is characterized as a right-to-manage contract, which allows unions to compress wage differentials between high- and low-skilled workers, by implementing a binding minimum wage. This paper shows that when labor markets are competitive even low levels of wage compression lead to large welfare losses, since wage compression creates costly unemployment among low-skilled workers. The effect of wage compression on the supply of skilled labor, however, is rather small, since the disincentive effect of a lower, high-skilled wage is, to a large extent, offset by a lower opportunity cost of schooling due to higher unemployment.     

The economics of production systems: Segmentation and skill-biased change

In this paper, the concept of production systems is introduced. I assume a standard thick-market externality together with the idea that higher quality goods also require higher skills from workers. Firms face a trade-off between low-quality goods with low skill-requirements for which the potentially abundant labour force generates strong thick-market externalities and higher quality goods with higher skill-requirements. In equilibrium, the economy is partitioned into production systems, i.e., clusters of firms producing the same quality. The distribution of skills determines the boundaries of the production systems, which in turn determine the wages. In this framework an increase in the supply of skilled workers can induce first higher wages for all workers and then higher wages for the skilled but lower wages for the unskilled. This is consistent with the late 20th century evolution of the US labour market.     

A nonparametric analysis of insufficient wage incentives in the Chinese health industry

ABSTRACT

This study provides empirical results on the insufficient wage incentives in the Chinese health industry, which may result in the poor productivity of high-ability medical personnel. We first propose a signaling game by capturing the progressive wage incentive in this industry. Then, we show that the model primitives are nonparametrically identified and estimable using recently developed methodologies related to measurement errors. Adopting a dataset from the China Household Income Project, we provide empirical evidence of the negative influence of insufficient wage incentives on the productivity of high-ability workers, especially those in higher job positions. As the number of high-ability workers in higher job positions is high, it is important to improve wage incentives in the Chinese health industry, especially for workers in higher job positions, to promote the productivity of high-ability medical workers.     

Learning-by-doing,technology-adoption costs and wage inequality

In the dominant literature, the technological-knowledge bias that drives wage inequality is determined by the market-size channel. We develop an endogenous growth model with two technologies in which: a specific quality of labour, low or high-skilled, is combined with a specific set of quality-adjusted intermediate goods; the market-size channel is practically removed; adoption costs and learning-by-doing are linked with labour endowments. By solving transitional dynamics numerically, we show that changes in the supply of labour affect learning-by-doing and technology-adoption costs, which, in turn, influence the technological-knowledge bias and thus wage inequality. The proposed mechanisms can accommodate facts not explained by the previous literature.     

The empirical content of the job search model: Labor mobility and wage distributions in Europe and the US

Job search models of the labor market hypothesize a very tight correspondence between the determinants of labor turnover and individual wage dynamics on one hand, and the determinants of wage dispersion on the other. This paper offers a systematic examination of whether this correspondence is present in the data by estimating a rudimentary partial equilibrium job search model on a 3-year panel of individual worker data covering 10 European countries and the U.S. We find that our basic job search model fits the data surprisingly well. This also allows us to point at a number of interesting empirical regularities about wage distributions. Our results suggest that cross-sectional data on individual wages contain the basic information needed to obtain a reliable measure of the “magnitude of labor market frictions”, as measured by a parameter of the canonical job search model. Finally, we use our results in a cross-country comparison of the intensity and nature of job-to-job turnover. We arrange countries into two different groups according to their turnover intensity. We further show that the nature of job-to-job turnover is very different between those two groups: Turnover is predominantly voluntary in low-turnover countries, whereas it is to a large extent involuntary in high-turnover countries.     

Employment fluctuations and dynamics of the aggregate average wage in Poland, 1996–20031

The aggregate average wage is often used as an indicator of economic performance and welfare, and as such often serves as a benchmark for changes in the generosity of public transfers and for wage negotiations. Yet if economies experience a high degree of (non‐random) fluctuation in employment, the composition of the employed population will have a considerable effect on the computed average. In this paper we demonstrate the extent of this problem using data for Poland for the period 1996–2003. During these years the employment rate in Poland fell from 51.2 percent to 44.2 percent and most of this fall occurred between the end of 1998 and the end of 2002. We show that about a quarter of the growth in the average wage during this period could be attributed purely to changes in employment.     

Employment and wage behaviour of industrial enterprises in transition economies: The cases of Poland and Czechoslovakia1

In this paper we use two very large panel datasets from Poland, 1988-90 and Czechoslovakia, 1990-1992 to explore the dynamics of employment and wage determination at the enterprise level in the early years of transition. The study is intended to assist in building a coherent picture of microeconomic adjustment in transition, a field which was not sufficiently explored in the early years of reform. We find that Polish firms were already to some extent responsive to market conditions pre-reform, notably to demand in determining employment. Czechoslovak firms, however, were largely unresponsive to such pressures in 1989-90. The elasticities rose significantly in both countries in the early years of reform, especially in Czechoslovakia which quickly attained initial Polish patterns of adjustment. Firms became much more responsive to sales and cost pressures in adjusting employment and to their own productivity in setting pay. Ownership effects in these early years were, however, much more modest, with state-owned firms adjusting employment more than their private counterparts, perhaps because over-manning was more serious in that sector.     

Transatlantic Differences in Labour Markets: Changes in Wage and Non-Employment Structures in the 1980s and the 1990s

Abstract. Rising wage inequality in the United States and Britain and rising continental European unemployment have led to a popular view in the economics profession that these two phenomena are related to negative relative demand shocks against the unskilled, combined with flexible wages in the Anglo-Saxon countries, but wage rigidities in continental Europe ('Krugman hypothesis'). This paper tests this hypothesis based on seven large person-level data sets for the 1980s and the 1990s. I use a more sophisticated categorization of low-skilled workers than previous studies, which exhibits differences between German workers with and without apprenticeship training, particularly in the 1980s. I find evidence for the Krugman hypothesis when Germany is compared with the United States. However, supply changes differ considerably between countries, with Britain experiencing enormous increases in skill supply explaining the relatively constant British skill premium in the 1990s.     

Foreign currency debt, risk premia and macroeconomic volatility

This paper studies the relationships between foreign currency debt, macroeconomic volatility, and risk premia in a model of a small open emerging market economy. The external value of the local currency is counter-cyclical, so that foreign currency debt requires larger repayments than local currency debt in bad states of nature. The level of foreign currency-denominated debts, therefore, affects the volatility of aggregate demand and by extension of the exchange rate. Exchange rate volatility is in turn an important determinant of the risk premium on local currency debt. Finally, this risk premium is a major factor in the choice of local versus foreign currency for emerging market borrowers. The mutual endogeneity of foreign currency debt, risk premia, and macroeconomic volatility creates important feedback effects in the economy: small increases in international risk aversion may entail large amplification effects on macroeconomic volatility since domestic borrowers substitute towards cheaper but riskier foreign currency debt finance.     

Product cycles, endogenous skill acquisition, and wage inequality

Abstract .  This paper presents an endogenous product cycle overlapping generations model, where the supply of skilled labour is endogenously determined. This is used to examine how production shifts through imitation by developing countries affect the domestic wage differential and supply of skilled labour in developed countries. In the model, production shifts increase the demand for researchers in developed countries and cause higher relative wages for skilled labour: this leads to more individuals acquiring the skills. As a consequence, the model helps to explain the simultaneous increase in the domestic wage gap and in the supply of skilled labour observed in developed countries.     

Globalization and inter‐industry wage differentials in China

This paper explores the relationship between globalization and inter‐industry wage differentials in China by using a two‐stage estimation approach. Taking advantage of a rich household survey dataset, this paper estimates the wage premium for each industry in the first stage conditional on individual worker and firm characteristics. Alternative measures of globalization are considered in the second stage: trade openness and capital openness. A disaggregation of trade into trade in final and intermediate goods shows that increases in import (export) shares of final goods reduce (increase) the wage premia significantly, whereas imports or exports of intermediate goods do not explain differences in industry wage premia. This finding is supported by stronger effects for final goods trade in coastal than noncoastal regions. Our results also show a positive relationship between capital openness and industrial wage premia, though this finding is less robust when potential endogeneity issues are allowed for.     

Multinationals,cross‐border acquisitions and wage dispersion

Abstract We examine the impact of cross‐border acquisitions on intra‐firm wage dispersion using a detailed Swedish linked employer‐employee data set including data on all firms and about 50% of the Swedish labour force with information on job‐tasks and education. Foreign acquisitions of domestic multinationals and local firms increase wage dispersion but so do also other types of cross‐border acquisitions. Hence, it is the acquisition itself rather than foreign ownership that increases wage dispersion. The positive wage effect is concentrated to CEOs and other managers, whereas other groups are either negatively affected or not affected at all.