Trade, wages, and the political economy of trade protection: evidence from the Colombian trade reforms

Worker industry affiliation plays a crucial role in how trade policy affects wages in many trade models. Yet, most research has focused on how trade policy affects wages by altering the economy-wide returns to a specific worker characteristic (i.e., skill or education) rather than through worker industry affiliation. This paper exploits drastic trade liberalizations in Colombia in the 1980s and 1990s to investigate the relationship between protection and industry wage premiums. We relate wage premiums to trade policy in an empirical framework that accounts for the political economy of trade protection. Accounting for time-invariant political economy factors is critical. When we do not control for unobserved time-invariant industry characteristics, we find that workers in protected sectors earn less than workers with similar observable characteristics in unprotected sectors. Allowing for industry fixed effects reverses the result: trade protection increases relative wages. This positive relationship persists when we instrument for tariff changes. Our results are in line with short- and medium-run models of trade where labor is immobile across sectors or, alternatively, with the existence of industry rents that are reduced by trade liberalization. In the context of the current debate on the rising income inequality in developing countries, our findings point to a source of disparity beyond the well-documented rise in the economy-wide skill premium: because tariff reductions were proportionately larger in sectors employing a high fraction of less-skilled workers, the decrease in the wage premiums in these sectors affected such workers disproportionately.     

Globalisation and Inter‐occupational Inequality: Empirical Evidence from OECD Countries

How does globalisation affect inter‐occupational wage inequality within countries? This paper examines this by focusing on two dimensions of globalisation: openness to trade and openness to capital flows, using a relatively new data set on occupational wages. Estimates from a dynamic model for 15 OECD countries spanning the period 1983–2003 suggest that increased openness increases occupational wage inequality in poorer OECD countries as predicted by the Heckscher–Ohlin–Samuelson model, but for the more advanced OECD countries, we find no significant effect. The absence of the expected result for the latter category can be due to a rapid increase in the supply of skilled labour, to outsourcing of skilled jobs or because changes in the trade flows are too small to have any significant effect in those countries.     

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.     

Foreign direct investment and wages: a cross-country analysis

While globalization has led to overall economic growth in a number of countries, questions abound on its distributional effects, especially on rising wage inequality across nations. The main objective of this study is to investigate empirically the effects of foreign direct investment (FDI) on wages in a cross-country setting. We investigate the general equilibrium propositions that capital inflows (outflows) increase (lower) wages in host (home) countries due to the change in relative factor endowments. We also explore whether capital inflows have differential impacts on skilled and unskilled wages in developing economies. Time-series data on 26 countries, 15 developed and 11 developing, are used to fit the labour share equation derived from a translog GNP function with net FDI stock as one of its arguments. Results confirm that capital movement brings about a cross-country convergence of wages. However, there is some evidence that inward FDI flows increase the wage gap between skilled and unskilled workers in developing countries.     

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.     

国际贸易、租金分享和工资水平——基于浙江制造业的实证研究

本文在工资决定的租金分享谈判框架下,利用浙江省2004年的经济普查数据,研究了国际贸易、企业盈利能力对制造业企业工资水平的决定效应。研究发现,资本方和劳动方之间存在明显的租金分享机制,企业盈利能力的增加会导致制造业从业人员收入的提升;尽管出口贸易没能提升企业的盈利能力,但出口贸易可增强劳动方在租金分享中的谈判能力,最终提升工资水平。最后,本文在租金分享谈判框架下讨论了工资差异问题,并得出结论认为,当前的国际贸易模式不会导致工资差异的扩大,但是产业管制政策和外商直接投资有导致工资差异进一步扩大的可能性。     

Trade and Wage Inequality: Local versus Global Comparative Advantages

This paper shows that disentangling the local and global dimensions of trade can be crucial to get a better understanding of the trade impact on wage inequality. In particular, it allows us to reconcile the empirical evidence with the Heckscher–Ohlin–Samuelson predictions. Our focus here is on Italy. As for local trade – within its own cone of diversification – Italy is specialised in the production of unskill‐intensive goods, while for global trade – with respect to the other cone of diversification – it is mainly specialised in the production of skill‐intensive goods. On the evidence of these specialisation patterns, we point out that the local trade has a strong impact on wage inequality. In particular, in line with the Heckscher–Ohlin–Samuelson predictions, the local export performance reduces wage inequality as it favours blue‐collar workers. As for global trade, it affects and increases wage inequality through the export channel, again consistent with the Heckscher–Ohlin–Samuelson predictions.     

Globalization, regional wage differentials and the Stolper-Samuelson Theorem: Evidence from Mexico

In this paper, I study what factors determined the changes in Mexico's regional wage differentials during the nineties. I exploit the regional variation in exposure to international markets to identify the effects of NAFTA on wages and the skill premium. The results support the presence of Stolper-Samuelson type of responses during Mexico's trade liberalization: regions more exposed to globalization appear to have exhibited an increase in overall wage levels, but a decrease in the skill premium, relative to other regions of the country. The results suggest that trade liberalization has a spatial dimension that is usually neglected in traditional models.     

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.     

Fairness,trade, and inequality

We develop a model of international trade between two symmetric countries that features inter-group inequality between managers and workers, and also intra-group inequality within each of those two groups. Individuals are heterogeneous with respect to their managerial ability, and firms run by more able managers have a higher productivity level and make higher profits. There is rent sharing at the firm level due to fair wage preferences of workers, and hence firms with higher profits pay higher wages in equilibrium in order to elicit their workers' full effort. We show that in this framework international trade leads to a self-selection of the best firms into export status, with exporting firms having to pay a wage premium. Aggregate welfare increases, but there is also larger inequality along multiple dimensions: Involuntary unemployment and income inequality between managers and workers increase, and so does inequality within these two subgroups of individuals, as measured by the respective Gini coefficients.     

贸易增长与工资差距(1990～2009)——基于劳动禀赋结构和技术效应结构的经验研究

文章从劳动禀赋结构和技术效应结构视角建立模型,研究中国近20年贸易增长与工资差距的关系。回归、Granger检验和Chow突变点分析发现:工资差距主要受与人均GNI更高国家之间贸易占贸易总额比率的影响,两者呈负相关关系;与低技能劳动密集型产品的产值占GDP比重关系密切;同时也和加工贸易、高新技术产品贸易的增长有显著的负的线性相关关系;事实表面上有悖于实际却佐证了要素价格均等化理论和S-S定理,而被广为引用的中间产品贸易模型和贸易的科技进步效应理论在某个角度上却缺乏经验支持;全球化与"赶超"式发展必然导致工资差距进一步扩大。     

Trade,migration costs and asymmetric migration patterns

Increase in trade has an asymmetric impact on emigration by skill types for a developing country. Cost of migration is a dynamic function of the type of emigration, and it determines a complementary relation between emigration of skilled workers and expansion of trade. Emigration of unskilled workers is a substitute, however, and these outcomes coexist with endogenously determined emigration rates that depend crucially on wage responses among the own skill types at the source. Additionally, asymmetric emigration patterns increase wage inequality.     

Skill Upgrading and the Real Exchange Rate

This paper examines the effect of changes in the real exchange rate on skill upgrading in the case of Chile. Using plant‐level data from the manufacturing sector, we find that a real depreciation increases the share of skilled workers in the total wage bill in exporters but not in non‐exporters. This result suggests that depreciations or, more generally, increases in export profitability, may induce exporters to adopt more skill‐intensive technologies. This finding gives support to recent models of trade that highlight the possible effect of the real exchange rate on skill upgrading and wage inequality. This paper also finds that real depreciations increase plants’ export intensity, suggesting that skill upgrading for firms that are already exporters is the channel through which real exchange depreciations affect wage inequality.     

Regional Trade Agreements in Mediterranean Area: Econometric Analysis by Static Gravity Model

Since the mid-1980s, there was the rise of a new wave of economic regionalism in the world economy with the spread of free trade agreements (FTAs). A key objective of free trade involves developing commercial exchanges between member countries. The gravity model is a vital tool to explain the bilateral trade data against the variables of the relative size of the pair of countries implicated in the trade: distance, common border, and language and models for each of the FTAs. This article focuses on studying the influence of FTAs in the Mediterranean countries in which we integrate the role of regional dummy EU (15), EMU (euro zone), the AMU and AGADIR agreement in trade flows. The use of regional variables are designed to determine whether its FTAs contribute to the creation of trade diversion. This study examines a cross-section and panel of 27 countries for 1980–2011. The results show the existence of a strong relationship between the factors of FTAs and trade flows.     

International competition and wage differentials - the case of Taiwan

This paper documents and investigates the structure of relative wages among skill groups (distinguished by gender, education and potential experience) in Taiwan over the period 1978 to 1990. To account for these changes, I construct a model of wage determination in which demographic groups are treated as separate inputs into the production process. Thus, the changes in relative wages are determined by (i) changes in the relative supply of input factors; (ii) changes in the product composition; and (iii) biased technical changes that shift the relative demand for inputs. Analysis of OECD trade statistics shows that manufacturing imports from Taiwan to OECD, the main source of derived demand for the unskilled labour, exhibited a time pattern that matches the overall relative demand shifts.     

The effect of outward processing trade on wage inequality: the Hong Kong case

This study uses time series analysis to investigate the impact of Hong Kong's increased outward processing trade with the Chinese Mainland on wage inequality. We found a significant positive association between outward processing trade and the wage premium of university graduates over primary school graduates and that over secondary school graduates. Moreover, a standard test showed one-way causality from outward processing trade to the widening of skill wage gap. Furthermore, the increase of outward processing trade is found to both increase the pay for well-educated people and decrease the pay for less well-educated people, thereby widening the wage gap.     

The effect of commercial policy on international migration flows: the case of the United States and Mexico

"Microeconomic simulations are performed to determine the impact of liberalized commodity trade on Mexican immigrant supply to the United States. The results suggest that a removal of trade barriers will reduce migration flows, but that the reduction will be fairly modest. Specifically, if both countries move from the levels of protection characteristic of the mid-1960s to completely free trade, the ratio of real U.S.-Mexican wages falls by roughly 18 percent. Using an upper bound for the range of empirical estimates of the wage elasticity of immigrant supply, this implies a maximum reduction in migration flows of 35 percent. A unilateral elimination of trade barriers by the United States reduces Mexican immigrant supply by a maximum of 14 percent."     

Trade liberalization in asian newly industrialized countries

Singapore, South Korea, and Taiwan are often perceived as having achieved similar trade patterns; nevertheless, their trade policies and patterns differ in fundamental respects. In this study, three models are considered and different aspects of the trade liberalization policies of these three countries are highlighted. The model of South Korea underscores the significance of product market concentration in restraining real wage growth and contributing to income inequality. The model of Singapore highlights the role of foreign investment in producing manufactured goods for export and in raising real wages. The factor proportions model of a labor-abundant economy adequately describes the Taiwanese liberalization. The model's predictions of rising real wages and no monopoly profits are consistent with Taiwan's declining income inequality.     

与发展中国家的贸易是否扩大了美国的相对工资差距

对外贸易不仅直接影响着相对工资差距,还通过技术创新效应间接影响着相对工资差距。本文运用美国制造业1997-2006年的面板数据,实证分析了美国与发展中国家的贸易对美国制造业相对工资差距的影响。研究结论是:来自发展中国家劳动密集型产品的进口竞争没有扩大美国制造业所有行业的相对工资差距,美国劳动密集制造部门相对工资差距的扩大与来自发展中国家的进口竞争有一定的关联,但技术密集制造部门相对工资差距的扩大与其无关;美国对发展中国家的出口贸易以及国内的技术创新在很大程度上扩大了美国制造业的相对工资差距。     

Who Supports Free Trade in Latin America?

This paper examines individual trade policy preferences across 17 countries in Latin America. The focus is on whether skilled or unskilled workers are more likely to support liberalised trade and on whether country characteristics, such as factor endowments, alter the preferences of skilled and unskilled workers. Based on the standard Heckscher‐Ohlin model and the Stolper‐Samuelson theorem, wage inequality in developing countries will decrease under free trade and unskilled workers will benefit. We find that on average skilled workers are more likely than unskilled workers to support free trade in Latin American countries. Separate country regressions reveal that this pattern is only statistically significant in 8 out of 17 Latin American countries. However, there are no countries in our sample in which unskilled workers are statistically more likely to support free trade than skilled workers, not even in the lowest skill‐endowed country in the sample. We also find that people from Latin American countries with higher GDP, faster growth, more cropland and a longer period of time since reform were more likely on average to support free trade.