A Schumpeterian North–South Growth Model of Trade and Wage Inequality*

The paper presents a dynamic general‐equilibrium model of interindustry North–South trade that is used to analyze the effects of trade liberalization on the Northern wage distribution. Both countries have a low‐tech sector where consumer goods of constant quality are produced by use of unskilled labor. The North also has a high‐tech sector that employs skilled labor and features a quality‐ladder model structure with endogenous growth. Both innovation and skill acquisition rates are endogenously determined. In a balanced trade equilibrium, it is found that Southern‐originated (Northern‐originated) trade liberalization leads to an increase (decrease) in Northern wage inequality both between skilled and unskilled workers and within the group of skilled workers. The endogenous change in the Southern terms of trade determines the direction of change in unskilled wages in both the North and the South.     

APPROPRIATE TECHNOLOGY AND INCOME DIFFERENCES

This article studies the relative productivity of skilled to unskilled workers across countries. Relative productivities are broken down into the human capital embodied in skilled workers and relative physical productivities (reflecting production techniques). I find that skilled workers from poorer countries embody less human capital and are also relatively less physically productive. Furthermore, results show that production techniques are inappropriate for most low‐income countries, and these countries experience large increases in GDP per capita by increasing the relative physical productivity of skilled to unskilled workers. This suggests that there are significant barriers to the adoption of skill‐complementary technologies.     

Persistent income gaps in an occupational choice model with multi‐goods

In this study, we propose a theory to explain why income gaps persist. We model a simple overlapping‐generations economy with three consumption goods and two types of workers. We find that high‐skilled workers have comparative advantage in skill‐intensive jobs and low‐skilled workers in less skill‐intensive jobs. This pattern of comparative advantage determines occupational choices by workers. Combined with human capital accumulation, the occupational choices widen income gaps between families. At the same time, the relative price of skill‐intensive goods declines owing to productivity improvement. The decline holds back income gaps from exploding. The implications of skill‐biased technological change are also examined.     

Wage-distance regulation in social-welfare programs: An option-theory perspective

It is often argued that low-skilled workers have an incentive to escape to the unofficial sector if welfare benefits come too close to the net wage in the official sector. Upper limits of welfare benefits often serve as an instrument to ensure a sufficiently high income differnetial between sectors. However, if unofficial-sector income is insecure, and if a change of sectors is costly, an option value of working in the official sector has to be taken into account. This option value reduces the incentive for lowly skilled workers to give up official-sector jobs. Upper limits of welfare benefits might therefore be defined less restrictively.     

Globalization,socio-institutional factors and North–South knowledge diffusion: Role of India and China as Southern growth progenitors

Nexus between income inequality and technology capture is explored in a global CGE model to explore the ricochet effect of technology transmission and its capture. In particular, the model shows that exogenous technology shock from developed North, vehicled via trade, transmits to developing Souths and induces productivity growth. This spillover capture, aided by human capital based adoptive capability, better governance and institution, causes increase in income and welfare and subsequently, leads to decline in income inequality. Dynamism of Southern Engines of Growth – India and China – caused them to emerge as ‘core’ South. Thus, triangular innovation diffusion between dynamic and peripheral South is also simulated to show how the backward or peripheral South could catch up via South–South Cooperation in a declining North–South trends in trade. This accrual of benefits could lead to sustained productivity growth and consequential relief of incidence of poverty in low-income countries.     

Skill distribution and income disparity in a North‐South trade model

Abstract. What are the impacts of free trade agreement on the welfare of different types of workers in a developed country? What is the impact of free trade on a developed country's income disparity? What is the effect of free trade on the skill distribution of a developed country? The objective of this paper is to address the above questions in a two‐sector general‐equilibrium North‐South trade model in which both countries produce one final good and one high‐tech intermediate input. The final good is produced with the use of a high‐tech intermediate input and unskilled workers. Horizontally differentiated skilled workers produce the high‐tech intermediate input. Each country is populated by a continuum of unskilled workers with differential potential ability. Workers in the North and South can acquire skills by investment in training or education. Thus, skill distribution in the North and South is determined endogenously in the model through a self‐selection process. I characterize two different types of equilibria: a closed‐economy equilibrium without trade and a free trade equilibrium. Then, I investigate the impact of free trade, in the presence of training costs, on the skill distribution within each country, income disparity, and social welfare. JEL classification: D63, F10, J31     

Skills,Tasks and the Scarcity of Talent in a Global Economy

The scarcity of talent is a tremendous challenge for firms in the globalized world. This paper investigates the role of labor market imperfection in open economies for the usage of talent in the production process of firms. For this purpose, I set up a heterogeneous firms model, where production consists of a continuum of tasks that differ in complexity. Firms hire low‐skilled and high‐skilled workers to perform these tasks. How firms assign workers to tasks depends on factor prices for the two skill types and the productivity advantage of high‐skilled workers in the performance of complex tasks. I study the firms’ assignment problem under two labor market regimes, which capture the polar cases of fully flexible wages and a binding minimum wage for low‐skilled workers. Since the minimum wage lowers the skill premium, it increases the range of tasks performed by high‐skilled workers, which enhances the stock of knowledge within firms to solve complex tasks and reduces the mass of active firms. In a setting with fully flexible wages trade does not affect the firm‐internal assignment of workers to tasks. On the contrary, if low‐skilled wages are fixed by a minimum wage, trade renders high‐skilled workers a scarce resource and reduces the range of tasks performed by this skill type with negative consequences for the human capital stock within firms. In this case, trade leads to higher per‐capita income for both skill types and thus to higher welfare in the open than in the closed economy, whereas – somewhat counter‐intuitive – inequality between the two skill types decreases, as more low‐skilled workers find employment in the production process.     

Credible redistribution policy and skilled migration

We analyze the joint determination of income redistribution and migration flows across fiscally independent regions. In our model, regional governments lack commitment so their policy announcements must be credible, and redistribution between skilled and unskilled workers is bounded by informational constraints. In any given region, the welfare of all workers is increasing in the share of skilled workers, as after-tax incomes increase for both skilled and unskilled workers. When skilled workers are more geographically mobile than unskilled ones, the endogenous response of redistribution policy can induce regional agglomeration of skilled workers. We also find that the equilibrium features symmetry-breaking if migration costs are relatively low; and that worker mobility tends to amplify pre-existing welfare differences in income and welfare across regions.     

A Model of Educational Investment,Social Concerns,and Inequality

We consider a model in which educational investments entail productivity gains, signaling power, and social status. The latter depends on the agent's relative achievement in one of three dimensions: innate skills, level of schooling, and income. We study the three scenarios separately and characterize the conditions under which social concerns increase or decrease educational and income inequality. Inequality increases (decreases) if education lowers the stigma suffered by low‐skilled workers less (more) than it boosts the prestige enjoyed by high‐skilled workers. We discuss the expected results of some policies in light of these findings.     

Capital–Skill Complementarity and Inequality in Sweden

Income inequality increased in Sweden during the 1980s and 1990s, as did the returns to higher education. The main conclusion of this study is that increased income inequality between high‐ and low‐skilled workers is demand driven and is due to the presence of capital–skill complementarity in production. Increased investments in new, more efficient capital equipment, along with a slowdown in the growth rate of skilled labor, have raised the ratio of effective capital inputs per skilled worker, which, in turn, has increased the relative demand (and market return) for skilled labor through the capital–skill complementarity mechanism.     

TRADE AND WAGE INEQUALITY: THE HONG KONG CASE

Abstract. This paper examines the effects of Hong Kong–mainland China trade on the wage inequality in Hong Kong. Because of the large volume of trade and the large income disparity between these two regions, this empirical study provides a good test of the theories on North–South trade. The econometric analyses show that the relative wage between the skilled and unskilled workers in Hong Kong increased as the share of the volume of Hong Kong's trade with mainland China in Hong Kong's total trade volume rose.     

Redistribution and entrepreneurship with Schumpeterian growth

We examine the effects of redistributive taxation on growth and inequality in a Schumpeterian model with risk-averse agents. There are skilled and unskilled workers, and the growth rate is determined by the occupational choice of skilled agents between entrepreneurship and employment. We show that redistribution provides insurance to entrepreneurs and increases the growth rate. The effects on inequality are such that low tax rates increase inequality relative to laissez-faire due to changes in wages, but higher tax rates can simultaneously raise growth and reduce inequality. We contrast the optimal linear income tax with alternative policies for promoting R&D and find that it is preferable on both equity and efficiency grounds.      

Labor Training and Foreign Direct Investment

Evidence shows that most foreign direct investment (FDI) flows from developed to developed countries (North–North) in skilled labor‐intensive industries. This paper builds a model that incorporates labor training into the proximity–concentration tradeoffs to analyze the entry mode of multinationals to a foreign country. Production requires both skilled labor and unskilled labor.. A multinational pursuing FDI needs to provide training to some workers in the host country to equip them with skills that are specific to the production of the firm. Labor training and skill specificity lead to contract friction. It is shown that in skilled labor‐intensive industries, FDI increases along with the economic development level of the host country, whereas in unskilled labor‐intensive industries, the reverse is true. This paper provides a theoretical explanation for the empirical findings on the prevalence of North–North FDI in skilled labor‐industries and North–South FDI in unskilled labor‐intensive industries.     

Trade Liberalization,Skill‐linked Intermediate Production and the Two‐sided Wage Gap

Abstract

A rising wage‐gap, almost universally, in the last two decades has contradicted the age‐old conventional wisdom of asymmetric wage movements across nations when trade is liberalized. We offer an explanation that fits well with the emerging trade pattern between the developed and more advanced developing countries like India and Mexico. We argue that a tariff reduction in the South on imports of an intermediate good from the North may raise the wage‐gap in both the North and the South. The price of the intermediate good moving in different directions and different factor‐intensity‐ranking of this good relative to the two different final goods produced in the two countries underlie this result. Rising wage inequality may specially affect the South because educational expenses and infrastructure do not allow ready transformation of the vast masses of unskilled workers into skilled workers. Hence, the policy lesson of the paper seems to be more public effort in arranging for smoother acquisition of human capital by the unskilled.     

Cheap home goods and persistent inequality

There exists a large literature which shows that public education is favorable for growth because it increases the level of human capital and at the same time it tends to produce a more even income distribution. More egalitarian societies are also associated with less social conflicts, and individuals have a lower tendency to report themselves happy when inequality is high. Therefore, it is important to study the reasons why the elite opposes the development of a strong public education system. It might be that education is related to social status and a strong public education system might threaten the elite’s political power. We show that one aspect of social status is the specialization of skilled workers in high-paid jobs and the abundance of unskilled workers in the production of cheap “home goods” in the market, such as painting and cleaning a house, babysitting, and/or cooking. We emphasize the role of general equilibrium price adjustments to show that depending on the level of inequality, the elite might prefer an economy with a positive and “high” cost of education than an economy where skills are freely provided. We show that this result goes through even if the skilled wage is not directly affected by the ratio of skilled to unskilled workers. We also provide empirical evidence consistent with our theory.     

Second‐Best Taxation of Incomes and Non‐Labor Inputs in a Model with Endogenous Wages

This paper considers a Mirrleesian optimal income tax model wherein labor inputs are not perfect substitutes and their wages are determined endogenously. It shows: (i) If skilled and unskilled workers are Edgeworth complements, skilled workers will necessarily face a marginal subsidy and unskilled workers a marginal tax on their incomes (these may not be the case if skilled and unskilled workers are Edgeworth substitutes); and (ii) redistributive concerns call for taxation of those inputs whose elasticity of complementarity with skilled labor is larger than with unskilled labor, and subsidization of those whose elasticity of complementarity is smaller.     

Interregional Migration of Human Capital and Unemployment Dynamics: Evidence from Italian Provinces

Since the mid‐1990s interregional migration flows in Italy have dramatically increased, especially from the South to the North. These flows are characterized by a strong component of human capital, involving a large number of workers with secondary and tertiary education. Using longitudinal data for the period 2002–2011 at NUTS‐3 territorial level, we document that long‐distance (i.e., South‐North) net migration of high‐skill workers has increased the unemployment at origin and decreased it at destination, thus deepening North–South unemployment disparities. On the other hand, long‐distance net migration of low‐skill workers has had the opposite effect, by lowering the unemployment at origin and raising it at destination. Further evidence also suggests that the diverging effect of high‐skill migration dominates the converging effect of low‐skill migration. Thus, concerns for an ‘internal brain drain’ from Southern regions look not groundless.     

Redistributive Taxation and Public Education

This paper examines the relative effectiveness of publicly provided ‘white collar’ professional (university) education versus ‘blue collar’ vocational training in achieving the government's redistributive goals. Although professional education directly benefits high‐skill high‐income workers and vocational training directly benefits low‐skill low‐income workers, we show that either provision of more professional education or less vocational training than in the first‐best allocation is optimal along the second‐best Paretian frontier since this facilitates incentive compatibility in labor supply decisions. Accordingly, the observation that public higher education expenditures in most countries favor universities is not necessarily inconsistent with an optimal redistributive program.     

What circumstances lead a government to promote brain drain?

This paper aims to complement the existing theoretical brain drain literature, focusing on the interaction between education, skilled emigration and government intervention in a small open economy. This article first characterises different emigration patterns that may arise in equilibrium, then seeks the conditions that lead a government to promote brain-drain. The model shows that the government may promote skilled emigration among workers with intermediate skills even though the resulting brain drain decreases per capita income. Emigrants remittances outweigh the income they would produce if they did not emigrate. Therefore, the government makes less severe the fall in per capita income that follows the brain drain by encouraging emigration among those skilled workers who are more productive abroad.     

Trade, product cycles, and inequality within and between countries

Abstract.  This paper incorporates Northern product innovation and product‐cycle‐driven technology transfer into the continuum‐of‐goods Heckscher‐Ohlin model. The creation of very skill‐intensive goods induces the North to transfer production of older, less skill‐intensive goods to the South. These relocated goods are the most skill intensive by Southern standards. Hence, product cycles raise the relative demand for skilled workers and thus wage inequality within both regions. This runs contrary to the Stolper‐Samuelson theorem, but accords well with the fact that wage inequality has risen in both Northern and Southern countries. Moreover, product cycles increase income inequality between countries. JEL classification: F1