International trade and the division of labor

This paper develops a model of international trade based on the division of labor under perfect competition. International trade, by eliminating the duplication of coordination costs, leads to a greater variety of tasks, each produced at a larger scale than in autarky. The greater variety of tasks implies greater division of labor and hence gains from trade. Extending the model to two factors of production yields the additional result that if the two countries are sufficiently similar in their relative endowments, then both factors of production can experience gains from trade.     

Endogenous Imitation and Technology Absorption in a Model of North–South Trade

Abstract

This paper considers the transfer of technology from the North to the South that occurs through trade in high-technology goods and explicitly models the ‘reverse-engineering’ process that allows the South to assimilate new technologies. A key finding of this study is that the South's rate of growth is dictated by the size of the country's human capital, which determines its absorptive capacity and its ability to assimilate knowledge from the North. We find that while a Southern country that is poor in human capital can only imitate, Southern countries that possess sufficiently large human capital endowments, beyond a certain threshold, signal the onset of innovation. We also find that the North enjoys a higher rate of innovation and growth with trade than without. North's gains are the highest when it trades with a human-capital ‘poor’ South, because imitation increases South's demand for Northern intermediates. But trade with the Southern countries that are human capital rich (and therefore involved in innovation), dampens their demand for Northern imports, adversely affecting North's growth. The model predicts growth convergence between the North and a South that is well passed the threshold for innovation.     

Trade policies, concentration, growth and welfare

The aim of this paper is to analyse, through a theoretical model, the effects that the trade integration of two countries may have on industrial location, growth and welfare.The conclusions reached finally depend both on whether the import or the export costs are affected by the trade policies on which the integration process is based and on whether the rich or the poor country introduces them. In general, when integration leads to an increase of industrial concentration in the rich country, the growth rate increases and welfare improves in both countries. If integration means that industry moves to the poor country, the growth rate decreases; in spite of this, in this case the poor country can also improve its welfare.     

分工演进对贸易政策的影响分析——基于交易成本的考虑

贸易政策同贸易理论是紧密联系在一起的.引入交易成本来分析分工演进对贸易政策的影响,不考虑交易成本条件下,贸易自由对于分工演进的国家是有利的;考虑交易成本条件下,随着分工演进,国家之间更加倾向于贸易谈判,最终结果为贸易自由化.但是由于各国交易效率不同,交易效率高的国家在贸易中获得的利益更多,而交易效率低的就会实行更多贸易保护.因此,我国需要降低交易成本,加强分工演进的速度,处理好国际之间的贸易摩擦.     

Technology for Sale

Free trade in commodities typically leads to gains for all participating countries. These gains can be augmented by trade in productive factors if returns differ between countries. But such trade would not exhaust potential gains if technological knowledge, not embedded in productive factors, differs between countries. Using a Ricardian model this paper shows how a country which has an absolute advantage based on technology in both commodities in a two-commodity world can gain by selling, giving, or even bribing the other country into using the advanced technology in the other country's export sector. If each country has an absolute advantage in the single commodity it produces, an exchange of technology for the other commodity can nonetheless lead to extra gains for both countries.     

Does Preferential Trade Benefit Poor Countries? A General Equilibrium Assessment with Nonhomothetic Preferences

We develop a Ricardian model of trade with nonhomothetic preferences to analyze preferential trade agreements (PTAs) among countries of different stages of economic development. The richer a country is, the more likely will PTAs improve its terms of trade, also when it is a non‐member. Rich non‐member countries are also less likely to incur welfare losses from PTAs. PTA membership only guarantees welfare gains for countries that are too poor to import the goods rich countries produce. For all other countries, the welfare effects of joining PTAs depend on the world income distribution and on the strength of comparative advantages.     

An Inframarginal Analysis of the Ricardian Model

This paper shows that a 2 × 2 Ricardian model has a unique general equilibrium, and the comparative statics of the equilibrium involve discontinuous jumps. If partial division of labor occurs in equilibrium, the country producing both goods would impose a tariff, whereas the country producing a single good would prefer unilateral free trade. If complete division of labor occurs in equilibrium, both countries would negotiate to achieve free trade. In a model with three countries, the country which does not have a comparative advantage relative to the other two countries, and/or which has low transaction efficiency, may be excluded from trade.     

Efficiency and distributional implications of global restrictions on labour mobility: calculations and policy implications

This paper sets forth a procedure for calculating the annual efficiency gains from alternative changes in existing international immigration restrictions and evaluates the impact of wage rate changes on nonmigrating labor. Data on US gross national product (GNP)/capita across countries are used to infer differences in the marginal productivity both between countries and across major world trading areas. The method assumes that the worldwide labor supply is fixed, that full employment occurs in all regions, and that differences in labor's marginal product across regions arise because of barriers to inward mobility of labor in high-wage countries. When these barriers are removed, labor is assumed to be reallocated and efficiency gains occur. Results of the calculations suggest large gains from the removal of global immigration controls which, in most cases, exceed existing worldwide GNP generated in the presence of labor mobility restrictions. A large portion of the gain is accounted for by labor migration between the aggregated rich and poor countries. Over 40% of the total potential gain is realized when only 10% of the wage differential is eliminated, suggesting that small changes in global migration restrictions have large marginal effects. Wage rates increase in labor-losing regions and decline in labor-receiving regions, dramatizing the incentives for labor unions in high-wage countries to oppose liberalization of immigration restrictions. These results suggest large potential worldwide efficiency gains from a move toward an international labor market free of immigration controls. This issue may be far more important to the North-South debate than a focus on initiatives such as commodity price stabilization, relaxation of trade protection, or increased aid flows.     

Open borders

There is a large body of evidence indicating that cross-country differences in income levels are associated with differences in productivity. If workers are much more productive in one country than in another, restrictions on immigration lead to large efficiency losses. The paper quantifies these losses, using a model in which efficiency differences are labor-augmenting, and free trade in product markets leads to factor price equalization, so that wages are equal across countries when measured in efficiency units of labor. The estimated gains from removing immigration restrictions are huge. Using a simple static model of migration costs, the estimated net gains from open borders are about the same as the gains from a growth miracle that more than doubles the income level in less-developed countries.     

Adam Smith's “tolerable administration of justice” and the Wealth of Nations

Adam Smith argues that a country’s income depends on its labor productivity, which in turn hinges on the division of labor. But why are some countries able to take advantage of the division of labor and become rich, while others fail to do so and remain poor? Smith describes how the security of property rights, through a “tolerable administration of justice,” allows investment and exchange to take place, bringing about economic progress. Recent empirical work on economic development has supported Smith’s emphasis on a country’s political “institutions,” particularly the judiciary, in determining its national income.     

Occupational choice and development

The rise in world trade since 1970 has been accompanied by a rise in the geographic span of control of management and, hence, also a rise in the effective international mobility of labor services. We study the effect of such a globalization of the world?s labor markets. The world?s welfare gains depend positively on the skill-heterogeneity of the world?s labor force. We find that when people can choose between wage work and managerial work, the worldwide labor market raises output by more in the rich and the poor countries, and by less in the middle-income countries. This is because the middle-income countries experience the smallest change in the factor-price ratio, and where the option to choose between wage work and managerial work has the least value in the integrated economy. Our theory also establishes that after economic integration, the high skill countries see a disproportionate increase in managerial occupations. Using aggregate data on GDP, openness and occupations from 115 countries, we find evidence for these patterns of occupational choice.     

Capital Mobility—Resource Gains or Losses? How,When, and for Whom?

This paper investigates which of the two types of countries—resource‐rich or resource‐poor—gains from capital market integration and capital tax competition. We develop a framework involving vertical linkages through resource‐based inputs as well as international fiscal linkages between the two types of countries. Our analysis shows that capital market integration causes capital flows from resource‐poor to resource‐rich countries and improves global production efficiency. However, such gains accrue only to resource‐poor countries, and capital mobility might even negatively affect resource‐rich countries. Furthermore, we show that resource‐rich countries can exploit the gains when taxes on capital are available.     

Sources of TFP growth in a framework of convergence-evidence from Greece

The main hypothesis tested in the paper is whether technology is a conduit of productivity growth for a country that falls behind the frontier. Although the current analysis focuses on a country growth narrative, the evidence represents a pair of countries (i.e. Greece and Germany) that admittedly form the periphery and the core of Europe. The first lesson taken from the study is that for more than two decades the speed of productivity adjustment was rather low in Greece, underlying a number of unobserved rigidities that exist both at the industry and the institutional level. Even though the speed of technology transfer is low, the adoption of foreign technology remains an important source of productivity growth. Other key findings are that productivity gains from trade exist but their full realization requires a substantial time lag. Additionally, the degree of trade openness improves absorptive capacity, confirming the dual role of trade as recently stressed in the productivity literature. R&D activity is another productivity growth contributor but only through higher rates of innovation.     

The transfer of production from rich to poor countries

A model with two countries, three factors, and a continuum of goods is used to explain why manufacturing production is being transferred from more to less developed countries over time. The three factors are labor, capital, and infrastructure, where labor and infrastructure are immobile internationally but capital is perfectly mobile through direct investment. Production of a good shifts from the rich to the poor country when lower poor country costs attract direct investment from the rich country. This direct investment is assumed to carry with it the necessary technological and marketing know-how. It is shown that only by adding to its stocks of immobile factors of production will one country lower its relative costs and thus expand the range of goods it produces domestically at the expense of the other country. It is also shown that given optimal investment behavior the stock of infrastructure in the poor country will grow faster than in the rich country. Taking endowments of labor as given, it follows that production must be transferred continuously over time. This process ends because there is enough relative change in the two countries' infrastructure-labor endowment ratios to allow factor-price equalization and incomplete specialization in production.     

Growth,expectations and tariffs

We present a growth model of international trade in which expectations about profitability and growth influence innovation and investment. Adaptive learning dynamics determine transition paths for countries with differing structural parameters. Countries limiting trade by tariffs on imports of capital goods can experience gains in growth and perceived utility for a finite time, whereas the rest of the world is adversely affected. Asymmetric gains persist longer when structural advantages of the country applying tariffs are larger. Substantial differences in levels of innovation, output and utility can appear within our asymmetric country setting.     

贸易增速下降之"谜"——基于全球价值链分工视角的解释

当前,全球贸易增速出现了大幅下降,这难以简单地从危机冲击及其后续影响层面进行解读.实际上,贸易的基础是分工,看待当前全球贸易失速现象理应深入到国际分工层面.鉴于此,文章构建理论模型以刻画上述现象及其成因,研究发现:(1)全球价值链分工演进的阶段性变化对贸易增速具有深刻影响,当分工深化到一定程度后,贸易规模扩大的"基数效应"和分工深化的"边际效应"会导致贸易增速下降;(2)对单个国家来说,价值链攀升也会影响贸易增速.进一步地,利用跨国面板数据的计量分析表明:(1)在有效控制其他影响因素的条件下,全球价值链分工深化的程度对贸易增速呈倒"U"形的非线性影响;(2)价值链攀升对单个经济体的贸易增速具有显著的负面影响.由此可知,在当前全球经济处于深度调整的特殊时期,价值链分工深化趋势减缓乃至"停滞",是导致当前全球贸易失速的根本原因之一;而中国的外贸失速除了受到上述因素影响外,还与自身的价值链升级有关.因此,面临全球贸易增速下降的压力,中国外贸发展亟待转型升级,充分发挥"稳定"全球贸易增长的应有作用.     

Endogenous Comparative Advantage*

We develop a model of trade between identical countries. Workers endogenously acquire skills that are imperfectly observed by firms; therefore, firms use aggregate country investment as the prior when evaluating workers. This creates an informational externality interacting with general equilibrium effects on each country's skill premium. Asymmetric equilibria with comparative advantages exist even when there is a unique equilibrium under autarky. Symmetric, no‐trade equilibria can be unstable under free trade. Welfare effects are ambiguous: trade can be Pareto‐improving even if it leads to an equilibrium between rich and poor countries, with no special advantage regarding country size.     

Trade and Global Income Inequality with Frictional Labor Markets: A Lesson from the Canada–US Free Trade Agreement

This paper develops a two-country trade model with frictional labor market structures to investigate the link between increased openness to trade and cross-country income inequality. Calibrated to US–Canadian data, the model simulation results show that the Canada–US Free Trade Agreement benefited Canada, the country with relatively higher capital intensity, more due to its capacity to flexibly expand in response to an increase in product demand. The results from counterfactual experiments indicate that increased capital intensity in the US is expected to increase gains from trade in both countries while making the distribution of gains less unequal.     

从开放宏观的视角看环境污染问题:一个综述

在全球化背景下,伴随着国际间的要素流动,环境问题越来越多地被赋予了全球化的内容。本文将环境与增长、环境与贸易、环境与就业、环境与人口迁移等研究文献纳入到一个开放宏观分析框架中,通过文献研究发现,国际分工使"南—北"之间存在了多纬度的"环境不平等":首先,环境与经济增长问题先后经历了三个发展阶段,即罗马俱乐部提出的"增长极限说"、环境库兹涅茨曲线假说、贸易与环境库兹涅茨曲线假说相关性的争论。随着研究的推进,环境与增长问题越来越类似于一枚硬币的两面,难以同时兼得,但是,由于国际分工模式的差异,发展中国家却为发达国家提供了"污染储藏地"。其次,虽然环境规制使企业损失了部分"棕色"就业,但是环境保护同样能够创造"绿色"就业,然而,在国际分工背景下,环境保护是否有利于发展中国家的整体就业还存在着争议。最后,环境恶化已经导致一些国家出现了"环境难民"以及随之而来的人口迁移。到2050年,全世界由气候变化引起的人口迁移很可能达到5千万至7亿。然而,穷国和富国的环境压力和迁移能力却不尽相同,从某种程度上,这也是国际分工产生的间接影响,但是,关于这一问题的研究还十分有限。     

A Calibrated Trade Model of Agglomeration

This paper explores just how good the idea of international agglomeration of industry can be at explaining observed economic differences between countries. An international trade model with industrial agglomeration is outlined and calibrated to real data from the world's 10 largest countries by population, in order to assess how well it can explain the gap between rich and poor countries, observed trade volumes, price differences, and other types of data. The model is revealing in showing that, given the existing location of labor, an asymmetric exogenous distribution of firms is enough to generate income disparity and other stylized facts.