Trade liberalisation and manufacturing wage premiums: Evidence from Thailand

This paper investigates trade related industrial wage premiums. The procedure involves (1) estimating industrial wage premiums and (2) linking those estimated wage premiums to trade related variables. Results reveal that (1) in addition to workers’ characteristics, industry characteristics where workers are employed were important in determining the wages for workers, (2) falling output tariffs resulted in increased wage premiums, and (3) an increase in intermediate imports exerted a strong positive influence on wage premiums. Linked employer and employee micro data may provide further insights which are currently not available.     

Trade liberalization and wage inequality: Evidence from Korea

This paper investigates the heterogeneous income distribution effects of trade liberalization using Korean survey data from years of 2000–2015. Following the Stolper-Samuelson theorem most of previous research studying the effects of trade liberalization on wage differences focus on workers’ characteristics (e.g., skilled or unskilled) while heterogeneity within the same worker group has not been yet substantially investigated. To fill this gap, this paper provides empirical evidence of wage inequality across firms within the same group of workers caused by trade liberalization, potentially implied in the new-new trade models with firm heterogeneity. Employing a difference-in-differences (DID) specification, we find that the wages of unskilled workers in Korea have increased since its FTAs with more advanced countries, such as members of EU and the US, came into effect, while the effects on the wages of skilled workers are negative but not statistically significant. We also show that wage effects are heterogeneous across firms within unskilled and skilled worker groups, while the positive effects are statistically significant and largest for unskilled workers in medium-large sized firms. These findings are in line with both traditional and new-new trade models.     

Foreign direct investment, intellectual property rights, and wage inequality in China

This article incorporates foreign direct investment (FDI) and product differentiation in a general equilibrium trade model. The analysis shows that freer trade and FDI will upgrade China's technology, improve its skills of labor, and increase the competitiveness of local firms in the international market. At the same time, the relative wage of skilled labor to unskilled labor will rise. The size of this rise will be affected by the degree of protection for intellectual property rights. These theoretical results are consistent with empirical evidence. The analysis provides insights in coordinating policies on FDI, labor market reform, and intellectual property rights protection.     

International trade and within-sector wage inequality: The case of South Korea

This paper studies which factors contributed to the changes in wage inequality in Korean manufacturing over the last three decades. By adopting Akerman et al. (2013)’s decomposition method, we examine the relative importance of within-sector and between-sector wage variations in Korean manufacturing over the period of 1980–2012. Our analytic results confirm that within-sector wage variation explains the lion’s share of overall wage inequality. Taking this finding into account, we estimate the impacts of international trade, skilled-biased technological change and labor market conditions on within-sector wage inequality in Korea. Our estimation results suggest that there was a structural change in determinants of wage inequality before and after the mid-1990s. The influence of international trade mainly through heightened import competition on wage dispersion became relatively more conspicuous over the last two decades.     

The minimum wage,exports, and firm performance: Evidence from Indonesia

This paper examines the interrelationship between changes in the provincial minimum wage, firms’ export behavior, and firms’ performance in Indonesia. In this regard, we apply a two-stage least squares regression analysis to detailed firm-level data of manufacturing enterprises during 2002–2014. We find that an increase in the minimum wage is associated with a decrease in a firm’s employment and productivity, but increase in its probability of exporting and markup. We also use the 2012 minimum wage reform in Indonesia to conduct a difference-in-difference analysis to further mitigate the potential endogeneity of minimum wage regulation. Our findings are generally robust to alternative estimation methods. Moreover, quantile regression results indicate that the average wage, firm size, and the education level of workers also affect the predictions. Above all, this study suggests that Indonesian exports and the country’s comparative advantage in international markets are not negligibly affected by higher labor costs caused by the growth in the minimum wage.     

Tariffs,relative prices and wage inequality: Evidence from China

This paper, based on data from China after its membership into the World Trade Organization (WTO), shows the co-existence of a fluctuating skill premium and rises in wages for both skilled and unskilled labor. Our research provides one specific factor, the tariff reduction biased toward unskilled labor-intensive sectors, to explain and quantify the magnitudes of skill premium dynamics using the mandated-wage approach. The empirical evidence indicates that sector-biased tariff reductions have widened wage inequality in China through their effect on product prices. World price competition, on the other hand, has contributed to declining wage inequality via product prices, which is consistent with the endowment-based expectations of China's integration into the more skilled-labor abundant world.     

Appropriation,firm dynamics,and wage inequality

This paper examines the income distribution and welfare effects of appropriation activities in an economy. In the short run, with a given number of firms, appropriation can narrow wage inequality between skilled and unskilled labor when the capital resources accrued by appropriators are not large. However, wage inequality widens when the capital accrued is large. In the long run, with free entry and exit of firms, an increase in appropriation can cause firms to enter when the accrued capital is not large. This gives rise to a win–win outcome by raising the wages of skilled and unskilled labor. However, if accrued capital is large, firms exit and a lose–lose situation may occur in which skilled and unskilled wages are reduced.     

Wage inequality and establishment heterogeneity

We analyze wage dispersion within and across establishments in Korea between 2007 and 2013. We find that foreign owned establishments and those operating in global markets have higher within-establishment wage dispersion. The effect is over and above the establishment size effect. Furthermore, wages are higher in larger establishments and internationally oriented ones. Our findings are consistent with theories explaining management pay and the scope of control. Our results also provide evidence that can explain the rise in wage inequality due to the emergence of ‘super star’ firms and global supply chains.     

Global value chains,firms, and wage inequality: Evidence from China

How does participating or moving to more upstream in the global value chains (GVCs) affect the premium paid to skilled compared to unskilled labor within firms? In this paper, we develop a model of heterogeneous firms with intermediate trade and two skill inputs, in which we apply the fair wage hypothesis to predict the wage premium changes according to firms' GVCs activities. The model predicts that firms' backward GVC participation, as measured by the share of foreign value-added content in exports (FVAR), has an ambiguous impact on wage inequality of skills, which depends on the relative importance of “FVAR-labor substitution effect” and “FVAR-profit effect.” However, moving to upstream sectors in GVCs, as measured by the export varieties' upstreamness (or average distance from final use), raises a firm's wage premium. Using detailed Chinese firm-level data from 2000 to 2006, we develop a Mincer-type empirical model to study the wage premium changes associated with FVAR and upstreamness. We find robust empirical evidence that the rise of wage inequality in China mainly arises from moving to more upstream sectors rather than changing GVC participation.     

Wage inequality dynamics and trade exposure in South Korea

South Korea has experienced a great U-turn in its inequality trends during the past few decades. In this paper, we explore the role of international trade in its wage inequality dynamics over the 1998–2012 period, using a unique household panel survey. Our analysis reveals that most of the overall wage inequality occurs within sectors and educational groups rather than between them. However, the share in total inequality of the “between” variation across sectors and educational groups has moderately increased over time. Furthermore, we document that almost the entire aggregate wage inequality in both manufacturing and services occurs within different trade-exposure categories rather than between them, and this pattern is persistent through time. These results suggest that international trade might not be the main driving force behind the rising wage dispersion in South Korea in the last two decades.     

Extreme heat and exports: Evidence from Chinese exporters

Does extreme heat have causal effects on exports? If so, how do the effects evolve? This paper exploits monthly fluctuations in the number of extremely hot days within a city to identify their effects on firm-level exports in that city. We find robust evidence that hot temperatures have persistent adverse effects on firm-level exports. Specifically, export losses gradually arise following a heat shock, beginning from an undetectable impact and eventually accumulating to a large and significant impact. An additional >30 °C day in a month could generate cumulative losses up to 0.83% of a firm's annual exports twenty-four months later. The negative effects of extreme heat are mainly through its adverse impacts on the firm's investment, capital, and production output. Capital-intensive sectors and FDI-related enterprises are among the most affected by high temperatures. Our findings support the “no-recovery” hypothesis after weather extremes and have implications for future climate change policies.     

Macroprudential policy and household wealth inequality: Evidence from China

The influence of LTV ceiling on household wealth inequality is not constant. This paper finds that when the return on housing investment is higher than the return on liquid assets, the LTV ceiling generally has a negative impact on household wealth inequality; otherwise, it is more likely to be positive. Increasing the LTV ceiling can significantly alleviate household wealth inequality in China. Housing price and the number of houses purchased are important channels, and the house purchase preference (savings rate and house purchase intention) plays a key role in regulating wealth distribution through the LTV ceiling.     

Labour unions and wage inequality among African men in South Africa

One Achilles' heel of post-Apartheid South Africa is the growing intra-racial income inequality, particularly among Africans. This paper examines the role of labour unions in explaining this phenomenon among African men given that labour markets are at the core of income inequality in South Africa. Using cross-sectional data drawn from Labour Force Surveys for 2001–10, we find a monotonically declining union wage premium. Further, our results indicate that unions have both compressionary and disequalising effects on wages. The disequalising effect dominates the compressionary effect, suggesting that unions have a net effect of increasing wage inequality among African men in South Africa. This finding implies that there is scope for unions to reduce inequality through initiatives that promote wage compression.     

Jobs with different wage determination mechanisms, social efficiency and unemployment

The purpose of this paper is to construct a theoretical framework for the labor market, which is composed of a variety of jobs with different wage determination mechanisms. We identify an equilibrium in which some firms post a wage and others bargain with workers. This paper shows that the proportion of firms adopting wage bargaining in a decentralized equilibrium is below the socially optimal level. We identify policies to increase this proportion and to improve social efficiency. Furthermore, we examine the impact of those policies on unemployment. The results of this study will determine the direction of employment policy on the labor market with various employment styles.     

Unobserved firm heterogeneity and the size-exports nexus: Evidence from German panel data

This paper starts from the stylized fact that firm size and exporting tends to be positively related. Using large sets of establishment panel data for three different industries from official statistics, evidence is presented that the familiar picture of an export/sales ratio that increases (at a decreasing rate) with firm size vanishes if unobserved firm heterogeneity is controlled for in a fixed-effects fractional logit regression model. This finding is well in line with the fact that many small firms are “hidden export champions.” JEL no. F10, D21, L60     

Promoting exports: the role of inward FDI in China

Since the late 1970s, exports and inward foreign direct investment (FDI) in China have risen dramatically under the open-door policy. The critical role of FDI in China's exports may be indicated by the fact that exports by foreign affiliates in China in 1998 were US$81 billion, comprising 44% of China's total exports in that year. While there is considerable evidence on the FDI export linkage in China, systematically empirical analyses have been limited. This paper investigates the issue using panel data at the provincial level in the period of 1986–1997. The findings support the widely held belief that increased levels of FDI positively affect provincial manufacturing export performance.     

Carbon inequality in China: Evidence from city-level data

Carbon inequality has attracted increasing attention worldwide. Utilizing data from China's High Spatial Resolution Emission Gridded Database (CHRED), this paper presents the measured CO₂ emission inequality in China for the years 2005, 2012, 2015, and 2020. Results show that the Gini coefficients of carbon emission report a slight decrease from 0.411 to 0.385 and the distribution becomes more symmetric from 2005 to 2020. Linking carbon inequality to economic level, the positive concentration index (0.230 to 0.118) indicates asymmetricity between carbon emission and economic development. A further decomposition analysis reveals the industrial sector's uneven development, indicating that energy-intensive features can be blamed for a large proportion of carbon inequality. Our findings suggest that policymakers should not consider economic development level alone as the only indicator of the allocation of abatement, as economic structure, energy intensity, and climate conditions are all responsible for such inequality.     

Wage increases, wage convergence, and the Lewis turning point in China

We examine the wage trends of ordinary workers and the wage convergence between unskilled and skilled workers in China. First, we find that wages in all non-agricultural sectors, wages of migrant workers, and wages of hired workers in the agricultural sector have increased dramatically since 2003. Second, through comparing wage differentials between migrant and urban resident workers and between heterogeneous education groups within migrant workers, and by investigating the changes in the contribution of the returns to education to wage differentials, we find that the wages of unskilled and skilled workers have converged. Both the increasing wage trends and wage convergence are interpreted as evidence supporting the hypothesis that China has passed what can be called the Lewis turning point in the industrial sector. We conclude that the sustainability of economic growth in China requires an upgrading of labor market institutions to accommodate the merging of the rural and urban labor forces.     

The wage impact of undocumented workers: Evidence from administrative data

Using administrative, individual level, longitudinal data from the state of Georgia, this article finds that rising shares of undocumented workers results in higher earnings for documented workers, but by a small amount. A one percentage point increase in the share of undocumented workers in a documented worker's county/industry results in an average wage boost of 0.44%. Within the firm, a one percentage point increase in the percent of undocumented workers employed by the firm boosts wages by 0.09% (0.11, 0.12, and 0.04 in low, medium, and high skill firms, respectively). Potential explanations for a positive wage impact are discussed.