Mind the Gender Wage Gap – the Impact of Trade and Competition on Sectoral Wage Differences

This paper examines differences between women’s and men’s wages in 18 selected OECD countries in the period 1970 to 2005. The study is based on 12 manufacturing sector‐ and skill‐specific sets of panel data on the gender wage gap. We apply a system generalised method of moments (GMM) estimator to the extended version of the conditional gender wage gap convergence equation, controlling for sector concentration and industry‐specific measures of openness using a difference‐in‐difference approach: trade‐affected concentrated sectors versus trade‐affected competitive sectors. The results indicate that: (i) an increase in sector concentration is associated with wage gap growth; (ii) both import and export penetration are associated with a reduction of the high‐skill gender wage gap growth in concentrated industries; (iii) there is evidence of a widening impact of trade on the medium and low‐skill occupational gender wage gap growth in less competitive industries; (iv) institutional regulations of the labour market have an impact on the development of the gender wage gap: for highly‐skilled labour an increase in labour market regulation raises the growth of the gender wage gap, while for medium‐ and low‐skilled workers, it lowers it.     

Wage Inequality in the United Kingdom: Trade and/or Technology?

I employ two alternative intra‐industry trade Applied General Equilibrium (AGE) models to explain some stylised facts of the British economy. The model with skill‐biased technical change (i.e. exogenous skill‐biased technical change à la Solow) can explain the rise in wage inequality between skilled and unskilled workers, the decline in manufacturing and the expansion of modern services. However, the model where technical change is trade‐induced (i.e. endogenous sector‐biased technical change à la Romer) performs better, because it can also explain the exponential rise of imported intermediate capital goods and developments in the wage rate of unskilled workers.     

THE DOUBLE ROLE OF SKILLED LABOR,NEW TECHNOLOGIES AND WAGE INEQUALITY

We examine the relationship between the supply of skilled labor, technological change and relative wages. In accounting for the role of skilled labor in both production activities and productivity‐ enhancing ‘support’ activities we derive the following results. First, an increase in the supply of skilled labor raises the employment share of non‐production labor within firms, without lowering relative wages. Second, new technologies raise wage inequality only in so far as they give incentives to firms to reallocate skilled labor towards non‐production activities. In contrast, skill‐biased technological change of the sort usually considered in the literature does not affect wage inequality.     

企业异质性、劳动力异质性与技能工资差距

文章提出研究假设,构建理论模型,揭示了企业异质性、劳动力异质性对技能工资差距的影响机理;基于中国工业企业微观数据,对企业异质性、劳动力异质性与技能工资差距的关系进行了实证研究。研究结果表明：(1)企业异质性对技能工资差距有显著的影响。其中企业绩效越好、创新能力越强、生产率水平越高、外资参与度越高,则技能工资差距越大。出口企业与体制内企业存在明显的技能工资溢价。(2)劳动力异质性对技能工资差距有显著的影响。其中男性占比越高、受教育年限越长、技能型员工占比与技术型员工占比越高,则技能工资差距越大;人力资本异质性进一步扩大了性别技能工资差距。(3)劳动力异质性与企业异质性交互项对技能工资差距有显著的影响。其中技能型员工占比扩大了狭义技能工资差距,技术型员工占比进一步扩大了广义技能工资差距,广义技能工资差距大于狭义技能工资差距。在此基础上提出了具有一定参考价值的政策建议,并对未来的研究方向进行展望。     

IS LABOUR MARKET FLEXIBILITY DESIRABLE OR HARMFUL? A FURTHER DYNAMIC PERSPECTIVE

A common belief of mainstream economics as well as underpinning government policy is that the more flexible real wage is, the lower is unemployment. In this paper we study the dynamics of a standard neoclassical labour market under the simplest Walrasian adjustment rule. We show that when consumption and leisure are sufficiently low substitutes, an increase in real wage flexibility may destabilize the unique Walrasian equilibrium of the economy, triggering fluctuations in wages and employment. Minimal departures from strict (Walrasian) neoclassical equilibrium modelling are required to obtain instability results for wage flexibility.     

Impact of Trade on Canada's Employment,Skill and Wage Structure

Using newly constructed data for 88 Canadian industries (including primary, manufacturing and services), for 15 years (1992–2007), we analyse the impact of trade and technological change on labour demand, skill structure, wage premiums and welfare in Canada. Results show that export growth has no impact, whereas import growth reduces employment growth. But contrary to popular belief, Canada's job loss due to imports has been very small, only about 6,000 persons annually. China's negative impacts are more pronounced in industries where the share of information and communication technology (ICT) capital is rising fast and among low R&D intensive industries. In terms of skill change, ICT use and real exchange rate appreciation are biased towards high skill workers. Imports from the United States and China are skill‐neutral, whereas imports from Mexico are skill‐upgrading. Overall, neither export nor import growth has an impact on the wage rate. However, had there been no imports from China, the annual wage growth rate of high skill manufacturing workers would have been 0.6 per cent higher. Between 1992 and 2007, there was an annual net gain from the rise in imports at about 0.4 per cent of GDP, in addition to the gains obtained from 1992 import levels vis‐à‐vis autarky.     

How do Firms’ Outward FDI Strategies Relate to their Activity at Home? Empirical Evidence for the UK

This paper provides new empirical evidence on the relationship between the structure of firms’ overseas FDI and the performance and organisation of their home‐country operations in both manufacturing and business services. It addresses two questions. First, does sorting into multinational status on the basis of productivity extend to the scale of overseas activity? Second, is there evidence that off‐shoring to low‐wage countries has asymmetric effects on high and low‐skill activities in the home economy? The paper considers heterogeneity in firms’ outward FDI strategies and in their behaviour at home, distinguishing between low‐skill and high‐skill‐intensive activities. I differentiate between firms that invest in relatively low‐wage economies and hence might be engaged in vertical FDI, and those that only invest in high‐wage economies. I find that firms that invest in low‐wage economies simultaneously invest in a large number of high‐wage economies, employing complex FDI strategies. I add to existing evidence by demonstrating that selection into multinational status on productivity extends beyond the decision of whether or not to engage in FDI, to the geographic scope of overseas operations. This is consistent with the highest productivity firms being best able to overcome large fixed costs of establishing multiple overseas facilities. I find evidence consistent with differential effects of vertical FDI on firms’ high and low‐skill manufacturing activity in the UK. Relocating low‐skill activity to relatively low‐wage economies could enable a firm to expand output, with potential positive effects on investment, employment and output in complementary (high‐skill) activities at home. For firms investing in relatively low‐wage economies, I find that labour in these countries may substitute for relatively low‐skilled labour in the UK. In high‐skill manufacturing industries I find that multinationals that invest in low‐wage economies are larger, more capital intensive and more intensive in their use of intermediate inputs than other UK‐owned firms.     

Shadow price of working in the shadows: services industry evidence

ABSTRACT

In this paper, we use an exogenous policy variation in the labour market to determine the wage gap between formally and informally employed workers. For our purposes, ‘informal employment’ describes employees who are not officially registered with any social security scheme. We use self-reported employee registration status to identify such workers, but the choice of working unregistered is not exogenous. Nevertheless, through an amnesty that was extended to only some workers in the labour market, we reduce the endogeneity problem, enabling estimation of the wage gap between these two groups. Our two-stage least square estimates reveal that the hourly wage penalty of working in the shadows is as high as 59%, and the monthly salary penalty is around 66%. Moreover, the wage gap is higher (as high as 70%) for those working in the services sector, as unregistered workers in this sector tend to be low skilled and low educated, and the monitoring of this sector is more difficult. Our analysis contributes to the literature by using an instrumental variable to treat the endogeneity of workers’ registration status. In addition, it shows that people working informally in the services industry receive a higher average wage penalty than other informally employed workers.     

Employment Flexibility,Dual Labour Markets,Growth, and Distribution

Many policymakers and economists have argued in favour of greater labour market flexibility as a part of structural adjustment reforms that are expected to improve economic performance. Existing post‐Keynesian‐Kaleckian (PKK) models are unable to address these issues because they assume away long‐term labour by allowing employment to be short term and adjusting freely with output. This paper introduces long‐term labour into PKK models. We develop a model that provides alternative ways of modelling labour market flexibility and suggest that when aggregate demand issues are important, an increase in employment flexibility is likely to have adverse growth and distributional impacts.     

Jobs and Exposure to International Trade within the Service Sector in Sweden

To establish in which service industries there is international trade (or it may potentially exist), we calculate locational Ginis for different industries. The basic idea is that from this measure of regional concentration of different activities within a country we can identify industries where there appears to be regional trade, and hence also a potential for international trade. Based on our method, we find that: (i) the number of employed in tradable service appears to be at least as large as in the manufacturing sector, (ii) tradable service is much more skill intensive than manufacturing, and (iii) lately, the employment in tradable service has increased substantially. We argue that the last mentioned result is consistent with the substantial growth of skilled labour in Sweden since the mid‐1990s (Rybczynski effect) and factors leading to increased relative demand for skilled labour. Particularly, increased competition from and offshoring to low‐wage countries seem recently to have had a considerable impact on the creation of skilled jobs and the displacement of less skilled jobs in the tradable sector in Sweden. Furthermore, we apply a similar method as for industries to identify tradable occupations. Using our classification of tradable industries and tradable occupations in a Mincer type wage equation, we find that workers in such industries and occupations receive a wage premia of 12–13 per cent.     

HIRING STANDARDS AND LABOUR MARKET CLEARING

Consider a labour market with heterogeneous workers. When recruiting workers, firms set a hiring standard and make a wage offer. A more demanding hiring standard necessitates a better wage offer in order to attract enough qualified applicants. As a result, an efficiency wage effect is obtained. An equilibrium emerges which does not clear the labour market. The wage level depends on structural characteristics of labour supply, such as heterogeneity and mobility of the workers, but—in contrast to other efficiency‐wage models—not on the level of unemployment and is, thus, compatible with increasing unemployment as observed, e.g. in Germany.     

外资进入、劳动收入份额与技能工资溢价——来自2008年服务业企业普查数据的经验分析

运用2008年第二次全国经济普查服务业企业数据,文章实证检验了外资进入对服务业企业劳动收入份额和技能工资溢价的影响。结果显示外资企业存在更高的劳动收入份额,且外资进入程度对当地企业的劳动收入份额存在正向的外溢效应。文章进一步将不同所有制类型与技能劳动力占比的交互项引入工资方程,发现外资企业存在更高的技能工资溢价。我们进一步验证了外资进入对当地劳动力市场技能工资溢价的影响。结果表明,在那些外资渗透率较高、市场竞争相对激烈的地区和行业,外资企业的技能工资溢价现象会产生溢出效应,促使当地企业提高对高技能员工的薪酬待遇。因此,在合理发挥服务业外资进入对收入分配优化效应的同时,也要采取相关措施防止其进一步拉大工资差距。     

Trade liberalisation and human capital adjustment

This paper highlights the way in which workers of different ages and abilities are affected by anticipated and unanticipated trade liberalisations. A two-factor (skilled and unskilled labour), two-sector Heckscher-Ohlin trade model is supplemented with an education sector which uses skilled labour and time to convert unskilled workers into skilled workers. A skilled worker's income depends on her ability, but all unskilled workers have the same income. Trade liberalisation in a relatively skilled labour abundant country increases the relative skilled wage and induces skill upgrading by the existing workforce, with younger and more able unskilled workers most likely to upgrade. But not all upgraders are better off as a result of the liberalisation. The older and less able upgraders are likely to lose. For an anticipated liberalisation we show that the preferred upgrading strategies depend on a worker's ability and that much of the upgrading will take place before the liberalisation. Hence some workers who would have upgraded had they anticipated the liberalisation will not if it is unanticipated, and adjustment assistance that applies only to post-liberalisation upgraders will fail to compensate some losers and distort the upgrading decisions of others.     

Foreign Direct Investment,Productivity, Demand for Skilled Labour and Wage Inequality: An Analysis of Uruguay

This study seeks to identify the causal effects of foreign ownership on productivity, the demand for skilled labour and wage inequality. With this aim, we use differences‐in‐differences techniques for a panel of Uruguayan manufacturing firms in the period 1997–2005. Our results seem to indicate that FDI causes higher productivity and increased demand for skilled labour. Furthermore, although average wages are higher in foreign‐owned firms than in domestic ones, the wage gap between skilled and unskilled workers is wider. It follows that promoting foreign investment enhances productivity. In addition, due to the greater demand for skilled workers, policies such as training schemes would be conducive to raising productivity still further, while other social policies could help to mitigate the wage inequality effects.     

Offshoring and the Skill‐premium: Evidence from Individual Workers’ Data

During the 1980s the United States has experienced an increase in both international trade and the skill‐premium. The association between these two phenomena has proven elusive in the early empirical literature on the subject. Indeed, the consensus among labour economists seems to be that trade has not been the main cause of such increase in the skill‐premium. This view has been challenged by Feenstra and Hanson (1999, Quarterly Journal of Economics, 114, 3, 907) who find that offshoring sizably affects the skill‐premium. I revisit this debate using individual workers’ data from the March Current Population Survey combined with industry‐level trade data. This strategy improves upon the work of Feenstra and Hanson who do not control for the demographic characteristics of the labour force. In my results, offshoring can explain between 9 and 30 per cent of the increase in the college wage premium, relative to high‐school workers. In addition, I find that offshoring can explain 21 per cent of the increase in the relative employment of skilled labour. These results suggest that offshoring may play an important role in the increase in the relative demand of skilled workers.     

Economic Reform,Skill Formation and Foreign Capital

Does trade liberalisation promote skill formation and positively influence the inflow of foreign capital in an economy? How do incentives offered to foreign capital affect skill formation and skilled‐unskilled wage inequality? Is liberalisation of agricultural exports counterproductive to skill formation and foreign capital inflow in the economy? We try to capture these relationships between foreign capital and skill formation in a small open economy facing various exogenous shocks. Among other results, we show that import liberalisation increases skill formation and the inflow of foreign capital in the country. We explore the evolving state of the skilled‐unskilled wage gap in a regime of greater skill formation.     

Skill bias, trade, and wage dispersion

Wage ratios between different percentiles of the wage distribution have moved in parallel and then diverged in the U.S. in the last 50 years. In this paper, I study the theoretical response of wage ratios to skill-biased technical change and trade integration. I build a simple model of heterogeneous technology and heterogeneous workers that features complementarities between the quality of ideas and abilities. I show that changes to the skill bias of technology and to trade costs can both reproduce the observed pattern since (i) they have similar asymmetric effects on productive vs. unproductive firms, and (ii) positive assortative matching in the labor market transmits this asymmetry across high and low skill workers. Focusing on the different channels through which skill-biased technical change and trade integration operate suggests ways to disentangle the magnitude of each.     

The endogenous skill bias of technical change and wage inequality in developing countries

This paper draws on existing empirical literature and an original theoretical model to argue that technical change does not have to be skill-biased in developing countries. Instead, the extent to which technology adoption in developing countries favors skilled workers depends on a number of factors. Free trade induces technology that favors skilled workers in skill-abundant developing countries and that favors unskilled workers in skill-scarce developing countries, and therefore amplifies the predicted wage effects of trade liberalization. Developing countries experience technical change that is skill-biased when imported skill-biased technologies become relatively cheaper. Increased skill supply further biases technical change in favor of skilled labor. These features aid our understanding of the observed rises in inequality within developing countries, the absence of a significant downward effect of expanded educational attainment on skill premia, and the differential effects of trade liberalization on inequality.     

Flexibility,Skill and Technical Change in UK Retailing

This article examines employment patterns in British retailing during the 1980s. It focuses on two debates central to contemporary economic sociology: the flexibility thesis and theories of skill and technical change. The data derive fiom the ESRC's Social Change and Economic Life Initiative and represent a sample of 72 retailing establishments fiom six localities in Britain. The article reveals that technological change had not produced much in the way of deskilling: rather, it had enskilled the work of already qualified and trained employees. Whilst part-time employment had increased in many stores, there was little evidence of any significant growth of other kinds of peripheral labour.     

中间产品贸易、技术溢出与发展中国家的工资差距:一个理论框架

中间产品贸易的技术溢出是国际贸易影响熟练劳动力与非熟练劳动力之间工资差距的一个重要机制。本文构建了一个理论框架,从中间产品贸易及其技术溢出效应的角度解释发展中国家相对工资差距不断扩大的现实。发展中国家从技术前沿的发达国家进口资本和技术密集型的中间产品,一方面可以使发展中国家间接地分享国际先进的R&D资本;另一方面给发展中国家带来了技术学习和模仿的机会。由于资本与技能的互补性和技术学习的技能偏向性,中间产品进口使发展中国家增加了对熟练劳动力的相对需求,从而扩大了熟练劳动力与非熟练劳动力之间的工资差距。