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.     

Intra‐industry Trade Liberalization: Why Skilled Workers are More Likely to Support Free Trade

This paper presents a theoretical model and empirical analysis that connects the prevalence of intra‐industry trade with increased wage inequality from trade liberalization in both skilled and unskilled labor abundant countries. The Stolper–Samuelson effect is incorporated into an intra‐industry trade liberalization (intra‐ITL) hypothesis where skilled labor opposes protectionism in all countries engaged in intra‐industry trade because skilled workers gain at the expense of unskilled workers from multilateral trade liberalization within the skill‐intensive sector. We examine empirical evidence on whether skilled individuals are more supportive of trade liberalization than unskilled individuals across 31 countries with different levels of intra‐industry trade and skill endowments. We find that the extent to which countries engage in intra‐industry trade in high‐tech commodities is strongly linked with the intensity of opposition to protection by skilled labor. Regression results strongly support our hypothesis that skilled workers, almost everywhere, are more likely to support free trade.     

Globalization,product differentiation,and wage inequality

Abstract This paper develops a two‐country, general equilibrium model of oligopoly in which the degree of horizontal product differentiation is endogenously determined by firms’ strategic investments in product innovation. Consumers seek variety and product innovation is more skill intensive than production. Stronger import competition increases innovation incentives, and thereby the relative demand for skill. An intra‐industry trade expansion following trade liberalization can therefore increase wage inequality between skilled and unskilled workers. As long as some industries remain shielded from international competition, the welfare implications of globalization are found to be generally ambiguous.     

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.     

Trade,Wage Gaps,and Specific Human Capital Accumulation*

We develop a new framework for the analysis of the impact of trade liberalization on the wage structure and on welfare. Our model focuses on the decision of workers to accumulate firm‐specific skills, by “on‐the‐job” training, knowing that this means their future wages will have to be negotiated, and that the outcome of negotiation will depend on the profitability prospect of firms operating in a new trading environment. We show that trade liberalization may reduce the welfare of a developing country because of its adverse effect on skill accumulation. We also explore the effects of trade liberalization on the wage gap between skilled and unskilled workers.     

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.     

Skill differentiation and wage disparity in a decentralized matching model of North–South trade

In this paper we develop a North–South trade model in which the South produces food and the North produces both food and a high–tech good. Food production is undertaken by unskilled workers, while the high–tech product is made only by horizontally differentiated skilled workers. Owing to the possibility of a peer–group effect, we allow the unskilled workers in the North to be equally or more productive than in the South. Horizontal matching of skilled workers is generally imperfect and the skilled wages are determined by a symmetric Nash bargain. We characterize two different types of equilibrium: a closed–economy equilibrium without trade and a free trade equilibrium without labour mobility. We then extend the benchmark framework to consider the presence of transport costs. In all cases with trade, the equilibrium properties of goods pricing, the volume of trade as well as between–group and within–group wage inequality are examined. JEL Classification: F10, D51, D63, J31 Différentiation d’habiletés et disparité de salaires dans un modèle décentralisé de commerce nord–sud dans lequel les habiletés sont arrimées. Ce mémoire développe un modèle de commerce international nord–sud dans lequel le Sud produit de la nourriture et le Nord produit à la fois de la nourriture et un bien de haute technologie. La production de la nourriture nécessite seulement une main d’?uvre non–spécialisée, alors que la production du bien de haute technologie réclame seulement une main d’?uvre spécialisée et différentiée horizontalement. On assume que les travailleurs non–spécialisés dans le Nord sont aussi productifs ou plus productifs que ceux dans le Sud. Pour ce qui est des travailleurs spécialisés, l’arrimage horizontal est généralement imparfait et les salaires sont déterminés par une négociation symétrique à la Nash. On définit deux types d’équilibres : un équilibre en économie fermée sans commerce international, et un équilibre de libre échange sans mobilité des travailleurs. On étend alors le cadre de référence pour prendre en compte les coûts de transport. Dans tous les cas où il y a commerce international, on examine les propriétés en équilibre des prix des biens, du volume de commerce ainsi que de l’inégalité de salaires tant entre les groupes qu’à l’intérieur des groupes.     

Gradual globalization and inequality between and within countries

Abstract.  This paper investigates the effects of gradual trade liberalization on intra‐country and inter‐country inequality. It assumes two countries, North and South, and two factors, skilled labour and unskilled labour. North is defined as the one that is relatively skilled‐labour abundant and larger. A marginal trade liberalization from autarky is shown to (a) increase (decrease) in skilled‐unskilled wage differential in the North (South) and (b) raise the inequality between North and South. As the global economy approaches free trade, a marginal trade liberalization has effects, which are the opposite of (a) and (b); that is, the relative wage falls in the North and rises in the South, and North‐South inequality decreases.     

A Directed Search Model of Inequality with Heterogeneous Skills and Skill–Biased Technology

In this paper I analyse the directed search/matching problem in an economy with heterogeneous skills and skill–biased technology. A unique symmetric equilibrium exists and is socially efficient. Matching is partially mixed in the equilibrium. A high–tech firm receives both skilled and unskilled applicants with positive probability, and favours skilled workers, while a low–tech firm receives only unskilled applicants. The model generates wage inequality among identical unskilled workers, as well as between–skill inequality, despite the fact that all unskilled workers perform the same task and have the same productivity in the two types of firms. Inequality has interesting responses to skill–biased technological progress, a general productivity slowdown, and an exogenous increase in the skill supply elasticity.     

Labour mobility and the redistributive effects of trade integration

This paper addresses the role of mobility costs in shaping the effects of trade integration on wage inequality and welfare. We present a three-factor, two-sector model in which the production technology exhibits capital-skill complementarity and the cost of moving across sectors differs between unskilled and skilled workers. Results show that trade integration increases aggregate welfare, but it also raises wage inequality, both within and across skill categories. We also model a public re-training program, financed by a proportional tax levied on skilled workers, which reduces the mobility cost of unskilled workers. We show that even if the re-training programme entails some welfare losses, it can reduce both within and between wage inequality, while still making free trade Pareto superior with respect to the no-trade regime.     

Trade,environment, and income inequality: An optimal taxation approach

In a small open economy, how should a government pursuing both environmental and redistributive objectives design domestic taxes when redistribution is costly? And how does trade liberalization affect the economy's levels of pollution and inequalities, when taxes are optimally and endogenously adjusted? Using a general equilibrium model under asymmetric information with two goods, two factors (skilled and unskilled labor), and pollution, this paper characterizes the optimal mixed tax system (nonlinear income tax and linear commodity and production taxes/subsidies) with both production and consumption externalities. While optimal income taxes are not directly affected by environmental externalities, conditions are derived under which under‐ or over‐internalization of social marginal damage is optimal for redistributive considerations. Assuming that redistribution operates in favor of the unskilled workers and that the dirty sector is intensive in unskilled labor, simulations suggest that trade liberalization involves a clear trade‐off between the reduction of inequalities and the control of pollution when the source of externality is only production; this is not necessarily true with a consumption externality. Finally, an increase in the willingness to redistribute income toward the unskilled results paradoxically in less pollution and more income inequalities.     

A model of wage and employment effects of service offshoring

This paper develops a two‐sector model of trade in goods and intermediate tasks that differ in tradability and skill intensity. A skill‐abundant country with high productivity is shown to offshore more unskilled tasks than skilled tasks, without relying on a particular correlation structure between tradability and skill intensity. With putty‐clay technology that allows retraining in the long run, transition from the non‐offshoring to the offshoring equilibrium generates wage and employment effects that switch from negative to positive as tradability declines, with the switches occurring at a higher degree of tradability for skilled tasks. This is consistent with the empirical literature.     

GLOBALIZATION,TRADE, AND WAGES: WHAT DOES HISTORY TELL US ABOUT CHINA?

Newly assembled data show that, as China opened up to global trade during the early 20th century, its exports became more unskilled‐intensive and its imports more skill‐intensive. Difference‐in‐differences estimates show that World War I dramatically increased Chinese exports, raising the relative demand for the unskilled workers producing them. When the war ended, trade costs declined and China's terms of trade increased, further stimulating exports. A simulation of a dynamic general equilibrium model demonstrates that the effects of the war on China's terms of trade produces a decline in the skill premium similar to what China experienced in the 1920s.     

The effect of NAFTA on internal migration in Mexico: a regional economic analysis

Trade facilitates growth in some regions of a country while shrinking others, and therefore to benefit from trade, labour may need to be able to migrate. This mobility is particularly crucial in a developing country with high income inequality like Mexico. We seek to answer the following questions: What characteristics facilitate or hinder that internal migration? Has trade liberalization changed the pattern of internal migration in Mexico? We first predict regional economic growth resulting from changes in Mexico-US tariffs by sector. We find that trade liberalization appears to have largely benefited the manufacturing sector. Next, using a spatial gravity model of migration, we find that while economic growth from trade openness drew workers to urban regions in the northern Border States of Mexico, much of the trade-driven migration occurred before NAFTA. Second, contrary to popular belief, migration from largely rural states appears to have decreased since NAFTA. We also find evidence that migration to the United States increased after NAFTA. Last, we find that income disparity in both the destination and origin region deters migration and that this effect increases after NAFTA. Thus, we see evidence that within-region income disparity can hinder migration, potentially exacerbating income disparity among regions.     

Changes in income distribution and welfare from greater immigration of unskilled workers

This paper considers the consequences of greater immigration of unskilled labor on income distribution and welfare in the receiving country. To address these issues, both the sending and receiving countries are represented in a static general equilibrium model which distinguishes between skilled and unskilled labor and which allows prices to be determined endogenously. In this framework an inflow of unskilled labor is likely to reduce wages of unskilled labor, but whether capital or skilled labor benefits depends upon demand elasticities, elasticities of substitution in production, and differences across countries in the productivity of unskilled labor. National welfare in the receiving country is likely to rise, to the extent that the relative price of importable goods falls, non-residents already in the country receive lower wages, immigrants receive lower wages than those paid to domestic workers, and immigrants cause little increased demand for public services and transfer programs.     

WAGE SUBSIDY AND WELFARE IN DEVELOPING COUNTRIES

This paper seeks to answer if wage subsidy to workers displaced due to trade reform raises welfare in a developing country. We use a general equilibrium model with non‐specific factor inputs and trade liberalization as a policy variable. A combination of wage subsidy and tariff rate obtains the second‐best welfare level. The theoretical result is new, policy‐relevant and important in view of political‐economy aspects of free trade in developing and transition countries.     

The macroeconomic impact of NAFTA termination

US President Trump has threatened to leave the North American Free Trade Agreement. How much would each member country gain or lose if this threat were carried out? Would trade imbalances within the region diminish? What would the transition to new production and consumption patterns look like? I provide quantitative answers to these questions using a dynamic general equilibrium model with a multi-sector input–output production structure, heterogeneous firms that make forward-looking export participation decisions, and adjustment frictions in trade and factor markets. Regional trade flows would fall dramatically, and while the US trade deficit with Canada would decline, the deficit with Mexico would grow. Welfare would fall by 0.04%, 0.12%, and 0.2% in the United States, Canada, and Mexico, respectively, and transition dynamics would significantly affect welfare in both the short run and the long run.     

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.     

Do South–South preferential trade agreements undermine the prospects for multilateral free trade?

Due to trade diversion, there have been concerns expressed over the proliferation of preferential trade agreements (PTAs) that include South countries. In this paper, we compare welfare across different geographic configurations of bilateral free trade agreements (FTAs) and customs unions (CUs) and examine their implications for the stability of multilateral free trade. While North–North PTAs do tend to yield higher global welfare than South–South PTAs, a single South–South FTA may make free trade more sustainable than any other single agreement. With pre‐existing North–North agreements and a large enough cost asymmetry between regions, an additional South member or a new South–South agreement always makes free trade harder to sustain.