外资进入、劳动收入份额与技能工资溢价——来自2008年服务业企业普查数据的经验分析

运用2008年第二次全国经济普查服务业企业数据,文章实证检验了外资进入对服务业企业劳动收入份额和技能工资溢价的影响。结果显示外资企业存在更高的劳动收入份额,且外资进入程度对当地企业的劳动收入份额存在正向的外溢效应。文章进一步将不同所有制类型与技能劳动力占比的交互项引入工资方程,发现外资企业存在更高的技能工资溢价。我们进一步验证了外资进入对当地劳动力市场技能工资溢价的影响。结果表明,在那些外资渗透率较高、市场竞争相对激烈的地区和行业,外资企业的技能工资溢价现象会产生溢出效应,促使当地企业提高对高技能员工的薪酬待遇。因此,在合理发挥服务业外资进入对收入分配优化效应的同时,也要采取相关措施防止其进一步拉大工资差距。     

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.     

Competitive pressure,innovation and trade protection: Evidence from US patent data

Recent theoretical models have suggested that the relationship between competition and innovation may best be characterised as an inverted‐U shape: firms in industries with low levels of competition are more likely to innovate in the wake of increased competition as they attempt to escape competition, while those in highly competitive industries will decrease innovation in the wake of increased competition as the profit incentive to innovate dissipates. Results from other studies have found positive as well as negative relationships between innovation and competition. In a parallel literature, trade economists have produced conflicting results regarding the impact of trade liberalisation on innovation. One stream of research has shown that increased access to imported intermediate goods increases productivity, suggesting a positive relationship between imports and innovation. Others have hypothesised that firms may use the technology embodied in intermediate inputs as a substitute for domestic innovation. In this paper, we merge these divergent literatures and investigate whether innovation, as measured by the production of patents by US manufacturers, has been impacted by market competition and tariff reductions. Our empirical findings indicate that insulation from imports in the form of higher tariffs on final goods was associated with innovation until the late 1980s, while falling tariffs on intermediate goods appear to have facilitated innovation during the 1990s. We also find evidence of the inverted U‐shaped relationship between market competition and innovation.     

Access to imported intermediates and intra‐firm wage inequality

We use Chinese firm‐level data from the World Bank Investment Climate Survey to examine the link between importing intermediates and intra‐firm wage inequality. Our results show that intermediate input importers not only have a significant wage premium but also have a greater intra‐firm wage dispersion than non‐importing firms. This pattern is robust when we control for productivity and use trade costs as the instruments. We further investigate the mechanism of how importing intermediates might contribute to both inter‐firm and intra‐firm wage inequality. Our evidence is consistent with three important channels. First, imported intermediate inputs complement skilled labour. Second, intermediates importers are more likely to use performance pay. Third, imported inputs complement innovation and employee training.     

Trade Liberalisation and the Wage Skill Premium in Korean Manufacturing Plants: Do Plants’ R&D and Investment Matter?

This paper examines the effects of output and input tariff reductions on within‐plant wage skill premium in Korean manufacturing plants. We find evidence that output tariff reduction interacts differently with plants’ R&D and investment behaviours, respectively, to affect wage skill premium. More specifically, output tariff reduction increases wage skill premium mostly in R&D‐performing plants while reducing it mostly in plants making positive facility investments. While there is weak evidence that input tariff reduction increases wage skill premium, no such interactive effects are found. One story behind our results is that, although both R&D and facility investments may respond to changes in profit opportunities due to output tariff reductions, R&D raises the relative demand for the skilled workers while facility investment, an activity of increasing production capacity, raises the relative demand for the unskilled workers.     

中间产品贸易、技术溢出与发展中国家的工资差距:一个理论框架

中间产品贸易的技术溢出是国际贸易影响熟练劳动力与非熟练劳动力之间工资差距的一个重要机制。本文构建了一个理论框架,从中间产品贸易及其技术溢出效应的角度解释发展中国家相对工资差距不断扩大的现实。发展中国家从技术前沿的发达国家进口资本和技术密集型的中间产品,一方面可以使发展中国家间接地分享国际先进的R&D资本;另一方面给发展中国家带来了技术学习和模仿的机会。由于资本与技能的互补性和技术学习的技能偏向性,中间产品进口使发展中国家增加了对熟练劳动力的相对需求,从而扩大了熟练劳动力与非熟练劳动力之间的工资差距。     

Rue the ROOs: Rules of origin and the gains (or losses) from trade agreements

ABSTRACT

This article provides three-good, three-country examples of trade in both intermediate inputs and final goods. These show the adverse effects that rules of origin (ROOs) can have, even in a world where every country has a free trade agreement (FTA) with every other country. ROOs may cause ubiquitous FTAs to yield a level of welfare, for everyone, that is worse than if there were no FTAs at all, and all trade were subject to common nondiscriminatory tariffs. Thus, the move to an ever increasing number of FTAs may be reducing world welfare.     

Offshore production and skill upgrading by Japanese manufacturing firms

We investigate the influence of offshore production by Japanese multinationals on domestic skill intensity. Identifying relationships based on within variation in a panel of 1070 firms, we find that additional foreign affiliate employment in low-income countries raises skill intensity. The positive effect of FDI on domestic skill intensity, however, diminishes as investment shifts towards high-income countries. Increases in affiliate employment in low-income countries also raise a firm’s reliance on finished goods purchases, suggesting that overseas employment affects domestic skill intensity because imports of final goods from foreign affiliates displace domestic production.     

The impact of trade liberalization on productivity: Evidence from India's formal and informal manufacturing sectors

Despite a large literature investigating the impacts of trade on firm productivity, there is almost no evidence on how small firms react to trade liberalization. Using a unique dataset of firm-level surveys that are representative of the entire Indian manufacturing industry, I show that India's unilateral reduction in final goods tariffs increased the average productivity of small, informal firms, which account for 80% of Indian manufacturing employment but have been excluded from previous studies. In contrast, the increase in productivity among larger, formal firms was driven primarily by the concurrent reduction in input tariffs. By examining the effect of the tariff liberalization on the distributions of productivity and firm size, I find evidence consistent with the exit of the smallest, least productive firms from the informal sector. In addition, I find that although the decline in final goods tariffs did not significantly impact average formal sector productivity, it did increase productivity among the top quantiles of the distribution.     

Human capital and wages in exporting firms

This paper studies the link between the education level of workers, export performance and wages. We argue that firms may escape intense competition in international markets by using high skilled workers to differentiate their products. This story is consistent with our empirical results. Using a very rich matched worker-firm longitudinal dataset, we find that there is a weak negative direct effect of exporting on wages, but an interaction term between export intensity and skill intensity has a positive impact on wages. That is, we find an export wage premium, but only in firms where the skill intensity is sufficiently high.     

The impact of trade liberalization on productivity: Evidence from India's formal and informal manufacturing sectors

Despite a large literature investigating the impacts of trade on firm productivity, there is almost no evidence on how small firms react to trade liberalization. Using a unique dataset of firm-level surveys that are representative of the entire Indian manufacturing industry, I show that India's unilateral reduction in final goods tariffs increased the average productivity of small, informal firms, which account for 80% of Indian manufacturing employment but have been excluded from previous studies. In contrast, the increase in productivity among larger, formal firms was driven primarily by the concurrent reduction in input tariffs. By examining the effect of the tariff liberalization on the distributions of productivity and firm size, I find evidence consistent with the exit of the smallest, least productive firms from the informal sector. In addition, I find that although the decline in final goods tariffs did not significantly impact average formal sector productivity, it did increase productivity among the top quantiles of the distribution.     

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.     

Markups,Bargaining Power and Offshoring: An Empirical Assessment1

This paper tests the pro‐competitive effect of imports on product and labour markets for Spanish manufacturing firms in the period 1990–2005. In doing so, it takes into account the type of imported products: final versus intermediate. Markups are estimated following the procedure suggested by Roeger and including an efficient bargaining model. The observed heterogeneity among firms is parametised to consider additional product standardisation and market concentration. The results support the imports as market discipline hypothesis for importers of final goods, while firms that offshore intermediate inputs show similar markups to nonimporters. Additionally, the union bargaining power is smaller for importers and the more homogeneous is the type of goods elaborated by firms.     

STOLPER–SAMUELSON REVISITED: TRADE AND DISTRIBUTION WITH OLIGOPOLISTIC PROFITS

This paper investigates the distributional impact of international trade when goods markets are oligopolistic and firms partially pass‐through changes in tariffs into prices and factor costs for differentiated products. Trade liberalization raises mark‐ups and profit shares in the export industry and lowers them in the import‐competing industry, while Stolper–Samuelson effects on real prices of primary factors are attenuated or possibly reversed. An extended model shows how ‘offshoring’ (trade in intermediate goods) can potentially increase mark‐ups for oligopolistic producers of final goods. The analysis illuminates why business interests generally support trade liberalization policies today, regardless of their countries' factor abundance.     

The protectionist bias of duty drawbacks: evidence from Mercosur

In a political-economy setting where tariffs and duty drawbacks are endogenously chosen through industry lobbying, it is shown that full duty-drawbacks are granted to exporters who use imported intermediates in their production. This in turn decreases their incentives to counter-lobby against high tariffs on their inputs. In equilibrium, higher tariffs will be observed on these goods. The creation of a regional block will change the political equilibrium. Duty-drawbacks will be eliminated on intra-regional exports, which in turn will lead to lower tariffs for goods used as inputs by intra-regional exporters. Evidence from Mercosur suggests that the elimination of duty-drawbacks for intra-regional exports led to increased counter-lobbying by users of intermediate products. In its absence the common external tariff would have been on average 3.5 percentage points (25 percent) higher.     

Import Churning and Export Performance of Multi‐product Firms

This paper analyses the impact of churning in the imported varieties of capital and intermediate inputs on firm export scope and productivity. Using detailed data on imports and exports at the firm‐product‐market level, we document substantial churning in both imports and exports for Slovenian manufacturing firms in the period 1994–2008. On average, a firm changes about one‐quarter of imported and exported product‐markets every year, while gross churning in terms of added and dropped product‐markets is almost three times higher. A substantial share of this product churning is due to simultaneous imports and exports of firms in identical varieties within the same CN‐8 product code (so called pass‐on‐trade). We find that churning in imported varieties is far more important than reduction in tariffs or declines in import prices for firms’ productivity growth and increased export product scope. We also find gross churning has a bigger impact on firm productivity improvements by a factor of more than 10 in comparison with net churning. Both adding and dropping of imported input varieties thus seem to be of utmost importance for firms aiming to optimise their input mix towards their most valuable inputs. These effects are further enhanced when excluding simultaneous trade in identical varieties, suggesting that pass‐on‐trade has less favourable effects on firms’ long‐run performance than regular trade.     

Trade liberalization, wage inequality, and endogenously determined nontraded goods

We examine the boundary between traded and nontraded goods as a channel for trade to impact factor prices. In a two-country, two-factor, continuum-good model, tariffs generate a range of nontraded goods. A tariff reduction has a direct effect to expand a country’s import set and an indirect effect through terms of trade to expand its export set. We show that the export expansion can dominate the import expansion, raising the relative demand for the factor intensively used in production. The result is useful in explaining observed rising wage inequality in developing countries following trade liberalization.     

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.     

A rehabilitation of effective protection

This note argues that the declining interest in the theory of effective protection is not justified, shows how the existence of intermediate goods affects the basic economics of tariffs, gives a simple proof of the symmetry of export subsidies and import duties with intermediate goods, and then applies the theory to analyze a potential route to free trade that could have minimal objections from special interests.     

The role of imports for exporter performance in Peru

Using highly disaggregated firm‐level customs data for imports and exports in Peru over the 2000–12 period, we explore the relationship between imports of intermediate inputs and firm export performance. The evidence shows that greater use, variety and quality of imported intermediate inputs are significantly correlated with higher export levels and growth, greater market diversification and higher export quality at the firm level, even after controlling for unobserved firm heterogeneity. Exporter–importers exposed to higher tariffs, and non‐tariff measures import less in total and exhibit lower import variety, whereas those using an advance customs clearance procedure designed to facilitate imports exhibit higher imports and a more diversified bundle of inputs.