Trade Liberalization and the Wage Skill Premium: Evidence from Indonesia

In this paper, we analyze the effect of reducing import tariffs on intermediate inputs and final goods on the wage skill premium within firms in Indonesia – a country with a high share of unskilled workers. We present a new finding that reducing input tariffs reduces the wage skill premium within firms that import their intermediate inputs. However, we do not find significant effects from reducing tariffs on final goods on the wage skill premium within firms.     

Costly investment and complementarities in an international trade model with directed technological change

We investigate the impacts on the skill premium and on economic growth in an innovator‐imitator general equilibrium growth model assuming: (a) directed technological change; (b) international trade of intermediate goods; (c) internal costly investment in both physical capital and R&D; and (d) complementarities between intermediate goods in aggregate production. With trade of intermediate goods, the complementarities degree and investment costs influence the economic growth of both countries, but do not affect the countries' skill premia, which are directed by technological knowledge. Additionally, in agreement with related empirical literature, openness to trade of intermediate goods leads to a higher equilibrium skill premium in both countries, whereas its impact on the common growth rate can vary in sign.     

The skill premium and economic growth with costly investment,complementarities and international technological-knowledge diffusion

We analyse the skill premium and the growth rate in an innovator-imitator general equilibrium growth model assuming (i) internal costly investment in both physical capital and R&D, (ii) complementarities between intermediate goods in production and (iii) technological-knowledge diffusion. We find that in the imitator country these three elements influence the economic growth rate and the skill premium. In the innovator country, while the growth rate is affected by costly investment and complementarities, the skill premium is not affected by any of our assumptions. It depends solely on the productive advantage of high-skilled over low-skilled labour, which suggests that the sustained increase in the skill premium observed in several developed countries over the last three decades may have been due to increases in such productive advantage.     

Cones of diversification in a model of international comparative advantage

The hypothesis that all countries belong to a single cone of diversification is often used in studies of international trade. However, contrary to this hypothesis, the range of capital–labour input ratios in US industries does not encompass the range of capital– labour endowment ratios in the world’s economies. Furthermore, among countries with capital–labour endowment ratios below the range of US capital–labour input ratios, wage rates are much lower than in the US. In this paper, the one-cone hypothesis is assessed relative to a two-cone alternative by clustering countries with similar factor proportions, estimating regressions for gross national product and net exports, testing for equality of coefficients, and approximating the posterior odds on one- and two-cone models. Rejecting the one-cone hypothesis, the paper presents estimates of a two-cone model and considers their implications for factor flows and the prospects of emerging market economies.     

FDI and the skill premium in a North–South global economy

The effect of FDI from North to South countries on the skill premium of both groups of countries is examined. The lower wage of unskilled labor in the South induces the Northern firms to shift the unskilled labor intensive production processes in the South. FDI occurs in an unskilled labor intensive activity, but in a skill-intensive sector. It is shown that this leads to an increase in the skill premium of skilled labor in both North and South.     

Developing country growth and developed country response

This paper makes a theoretical argument that growth in developing countries is likely to worsen the income distribution in developed countries and lead to a protectionist response that undermines the incentives for developing country growth. The model for this purpose is the two-cone version of the Heckscher–Ohlin (HO) trade model, in which countries have different factor prices even with free trade, and in which they produce mostly different groups of goods. In this model, unlike the HO model with factor price equalization, growth by the poor country expands the output of its capitalintensive good, which is also the labour-intensive good of the other country. Regardless of whether factors are mobile or immobile across sectors, this reduces the real wages of factors that are either intensive or specific in the labour-intensive sector of the rich country. The paper argues that this will then lead to the rich country restricting trade. This, in turn, will lower the return to capital in the poor country and reduce the incentive for further growth.     

Multiple cones, factor price differences and the factor content of trade

This paper examines the theoretical predictions of the multi-cone Heckscher-Ohlin model and the empirical evidence for it. I extend Helpman (1984)by identifying additional restrictions that characterize the free trade equilibrium. I illustrate that the complete set of restrictions are the building blocks of a multi-cone factor content specification which is the factor content dual to Alan Deardorff's (1979)well-known chain of comparative advantage goods prediction. The theoretical analysis implies that the existing tests of Helpman are incomplete. Applying the complete set of restrictions to Choi and Krishna's data set of 8 OECD countries, I find limited empirical support. This is compatible with previous studies suggesting that OECD countries do not occupy different cones.     

Vertical Specialization Between Developed and Developing Countries: A Modification of the Heckscher-Ohlin Model

This article analyzes the implications for the Heckscher-Ohlin model of a split of the production of a final good into the intermediate good production and the further working of the good. Through this split, the different parts of the production process can be matched to fit the factor endowment of each country. The new and quite central distinction from earlier contributions is that we take into account an exactly defined need of intermediate goods according to a certain kind of specification in every link of the production process. We show that the potential trade pattern thereby becomes much more varied and significantly distinct from the traditional Heckscher-Ohlin model. The input-output ratio of labor increases relatively to the input-output ratio of capital in the capital-abundant country's production of the capital-intensive split product and thereby the Rybczynski theorem is reinforced.     

South–South Trade and Skill Premia

Contrary to the predictions of the 2 × 2 × 2 Heckscher–Ohlin model, empirical evidence shows that the skill premium increased in some developing countries and decreased in others after trade liberalisation. This paper attempts to reconcile the empirical evidence with the theoretical predictions by introducing a model where South–South trade can produce the observed patterns of skill premia in the South. In this context, South–South trade expands the import range of the country that reduces the tariff. This increases the demand for and the cost of skilled workers in the other country. This also leads the country that reduces the tariff to expand its export range and reduce its import range. Therefore, the country that reduces the tariff experiences an increase in its export range, which leads to an increase in the skill premium. As the impact on the import range is ambiguous, it is possible that the other country experiences a decline in the skill premium. Thus, trade liberalisation between Southern countries can cause an increase in the skill premium in one and a decrease in the skill premium in another.     

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.     

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.     

Globalization,technical change and the skill premium: magnification effects from human – capital investments

This paper shows that endogenous adjustments in the composition of labour supplies magnify the effects of changes in commodity prices on the measured skill premium under quite plausible conditions. These composition effects arise from decisions of individuals with heterogeneous inherent abilities about acquiring human capital. They reinforce the well-known Stolper?–?Samuelson effect on the measured skill premium in countries with a sufficiently high relative supply of skilled labour, but compensate them otherwise. As a result, the model can account for the observation of a worldwide increase in the skill premium during the last two decades.     

The Skill Structure of Export Wage Premium: Evidence from Chinese Matched Employer–Employee Data

We study how the wage gap between exporting and non‐exporting firms (export wage premium) differs across skill groups, using unique matched employer–employee data from China. We find robust evidence that exporters pay relatively higher wages than non‐exporters to more educated workers. The differences in export wage premium across education groups are sizable. Further investigations show that the positive correlation between export wage premium and education is more pronounced in sectors with higher scope for quality differentiation. This is consistent with the theory that exporters produce relatively higher quality goods which require relatively higher quality skilled workers.     

Trade Reform and Inequality: The Case of Mexico and Argentina in the 1990s

This paper provides empirical assessments of one of the leading explanations for the increase in skill premium in Mexico and Argentina during the 1990s: trade liberalisation. We present evidence showing that imports increase skill premium in Mexico, while exports reduce it. In Argentina, trade increased skill premium in the early 1990s (the beginning of trade reforms), although it reduced it later in the decade. These results are helpful for a comparison between South–South integration, FTAA or bilateral FTAs with Northern economies as alternative trade policy options for Latin American countries.     

Portfolio autarky: A welfare analysis

A variant of the standard Heckscher-Ohlin model, a model of a two-country world economy populated by Samuelsonian overlapping generations, is presented and then used in a welfare analysis of two international economic policy regimes: A laissez-faire regime, characterized by free trade in goods and complete freedom of portfolio choice; and a portfolio autarky regime, characterized by free trade in goods and a prohibition, applicable world-wide, on the ownership of foreign assets (land). Using a ‘growth model’ version of the traditional welfare criterion, it is shown that the laissez-faire regime is optimal and that the portfolio autarky regime is not.     

Firm Heterogeneity,Endogenous Quality,and Traded Goods Prices

A model with endogenous quality and firm heterogeneity is developed. Firms can invest in quality, and quality investment is relatively skill intensive. The model is used to account for two findings in the empirical literature on traded goods prices, lacking a formal explanation in the theoretical literature thus far. First, the model provides a theoretical explanation for Schott's (Quarterly Journal of Economics 2004, 119, 647) empirical finding that relatively skill‐abundant countries export higher priced goods. Firms in these countries invest more in quality and therefore sell higher quality, higher priced goods. Second, the opposite effects of importer market size on traded goods prices at the firm level (positive) and at the aggregate level (negative) identified in the empirical literature can be explained with the model. In a larger market, the incentive to invest in quality is larger for each firm, leading to higher firm‐level prices. Due to a selection effect, also less productive firms selling goods of lower quality can export to larger markets, implying lower aggregate prices.     

Resource Structure and Imports: An Analysis of the Relationship between Skill-Intensive Imports and Skill Endowment

Countries generally import those goods which they do not produce, and there is a possibility that this might be due to unavailability of resources needed to produce the goods which the countries import. Hence, countries with lower levels of total skill endowment are supposed to import more skill-intensive goods than countries with higher levels of total skill endowment. However, the presence of vertical and horizontal intra-industry trade makes this picture complex. Using a theoretical model derived on the basis of earlier theories and some empirical investigation on data of 72 countries of 3 years, this article tries to find out whether there is any relation between total skill endowment and imports of a country. The results show that there is indeed a relationship, but the nature of this relationship depends on the effect of total skill endowment on the country's skill-intensive exports as well.     

重构比较优势理论的微观基础:一般均衡分析

基于消费者与厂商的最优决策,通过将外生技术差别纳入H-O模型进行一般均衡分析,重构比较优势理论的微观基础。研究发现,国际分工取决于要素禀赋与技术差别两种因素的综合作用,劳动力相对丰裕的国家若生产资本密集型商品的技术优势超过禀赋劣势,反而可以出口资本密集型商品。为了避免陷入"比较利益陷阱",中国应采取有效措施加快技术进步,突破传统比较优势分工格局。     

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.     

The role of trade and offshoring in the determination of relative wages and child labour

Incorporating family decisions in a two-period model of the world economy, we predict that trade liberalization raises the skill premium and reduces child labour in developing countries where the adult labour force is sufficiently well educated to attract production activities from abroad that will increase the demand for skilled relative to unskilled labour. Elsewhere, liberalization will reduce the skill premium, but it will not necessarily raise child labour. Our prediction is not rejected by the data, and it explains why child labour is negatively associated with trade openness in those developing countries where the labour force was relatively well educated when the liberalization took place, but not elsewhere.