Volatility due to offshoring: Theory and evidence

Existing models of offshoring are not equipped to explain how global production sharing affects the volatility of economic activity. This paper develops a trade model that can account for why offshoring industries in low wage countries such as Mexico experience fluctuations in employment that are twice as large as in high wage countries such as the United States. We argue that a key to explaining this outcome is that the extensive margin of offshoring responds endogenously to shocks in demand and transmits those shocks across borders in an amplified manner. Empirical evidence supports the claim that the extensive margin of offshoring is an active margin of adjustment, and quantitative simulation experiments show that the degree of movement of this margin in the data is sufficient to explain relative employment volatility in Mexico and the U.S.     

Offshoring,Plant Survival and Employment Growth

This paper empirically investigates the effects of offshoring on plant survival and employment growth using data on the Danish manufacturing plants during the period 1995–2006. To control for the potential endogeneity of the offshoring decision, the paper uses instrumental variables and propensity score‐matching approaches. The data allow me to control for the heterogeneity between the units by using firm‐level offshoring activities in different regions and performing the empirical analysis on plantlevel aggregation, which is shown to be of crucial importance. Using firm as a unit of observation, the effect of offshoring is, if any, very small. However, using plant as a unit of observation, there are strong indications that offshoring plays a much larger role for the extensive and intensive margin of adjustments. The results reveal that plants survival prospect is higher if the main offshoring is located in high‐wage countries; lower if it is located in low‐wage countries; and not affected if it is located in medium‐wage countries. Finally, the results also reveal that depending on where the main offshoring is located, the growth rate of low‐skilled employment is 2 to 8 per cent lower in plants of offshoring firms.     

Trade, offshoring, and the invisible handshake

We study the effect of globalization on the volatility of wages and worker welfare in a model in which risk is allocated through long-run employment relationships (the ‘invisible handshake’). Globalization can take two forms: international integration of commodity markets (i.e., free trade) and international integration of factor markets (i.e., offshoring). In a two-country, two-good, two-factor model we show that free trade and offshoring have opposite effects on rich-country workers. Free trade hurts rich-country workers, while reducing the volatility of their wages; by contrast, offshoring benefits them, while raising the volatility of their wages. We thus formalize, but also sharply circumscribe, a common critique of globalization.     

服务外包与国内就业:基于全球15个国家25个行业的实证分析

利用2000年和2005年的投入产出表数据,计算了世界15个主要发包国25个行业的服务外包率,并建立计量模型实证分析了服务外包对发包国国内就业的影响。研究结果表明,从总体上看,服务外包对发包国国内就业的影响方向是不确定的,正负效应主要取决于服务外包量的大小、外包对国内就业的替代效应和规模效应以及外包环节的类型;对绝大多数国家而言,服务外包的就业效应是不显著的,仅是影响国内就业的弱因素,工资水平和产业规模是影响各国国内就业的重要因素。     

Valuation effects with transitory and trend productivity shocks

Changes in asset prices of a country's foreign assets and liabilities (“valuation effects”) are commonly thought of as stabilizing: they counteract current account movements and mitigate the impact of the current account on the country's net foreign asset (NFA) position. This paper shows that whether valuation effects are stabilizing or not depends critically on the nature of the underlying productivity shocks. In response to transitory shocks, valuation effects are stabilizing; but in response to trend shocks, such effects amplify the impact of the current account on NFA position. These contrasting effects arise because optimally smoothing consumers respond differently to a transitory shock than to a trend shock to income. This theoretical result finds empirical support with G7 countries' data, and is illustrated by the pattern of external imbalances between the U.S. and other G7 countries since the 1990s.     

Detecting shift-contagion in currency and bond markets

This paper investigates why financial market crises often increase the interdependence between assets associated with different countries. Two sources of increased co-movement in asset returns are considered: (i) larger common shocks operating through standard cross-country linkages and (ii) changes in the structural transmission of shocks across countries, referred to as “shift-contagion”. To examine this issue, we develop a method for detecting shift-contagion with three notable features. First, parameters corresponding to the structural transmission of shocks across countries are identified in the presence of changing volatility regimes for the shocks. Second, the timing of changes in volatility is endogenously estimated instead of being exogenously assigned. Third, the countries in which crises originate need not be known or even included in the analysis. We apply the method to currency returns for developed countries and bond returns for emerging-market countries.     

Offshoring and unemployment: The role of search frictions labor mobility

In a two-sector, general-equilibrium model with labor-market search frictions, we find that the wage increases and sectoral unemployment decreases upon offshoring in the presence of perfect intersectoral labor mobility. If, as a result, labor moves to the sector with the lower (or equal) vacancy costs, there is an unambiguous decrease in economywide unemployment. With imperfect intersectoral labor mobility, unemployment in the offshoring sector can rise, with an unambiguous unemployment reduction in the non-offshoring sector. Imperfect labor mobility can result in a mixed equilibrium in which only some firms offshore, with unemployment in the offshoring sector rising.     

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.     

Do tariffs matter for the extensive margin of international trade? An empirical analysis

With disaggregate tariff data we study the impact of changing tariffs on the range of goods countries export to the United States. Our probits with country and good effects show tariffs tend to have a statistically significant but small impact: at best 5% of the increasing extensive margin for 1989-1999 and 12% for 1996-2006 is explained by tariff reductions. This suggests the extensive margin has not amplified the impact of tariffs on trade flows to such an extent that the relatively moderate tariff reductions since WW II can explain the strong growth of world trade.     

The Effects of Globalisation on the US Labour Mark'et: Service Sectors Considered

How has globalisation affected employment and wages in the United States? Existing studies largely ignore the intersector labour movement between the manufacturing and service sectors by focusing only on the intrasector movement within the manufacturing sector. However, by decomposing the aggregate labour demand in the United States, we find that the intersector movement is more substantial than intrasector movement. Motivated by the decomposition results, this study presents a three‐sector model that includes a manufacturing sector and two service sectors at varying skill intensities. The model shows that offshoring might translate into smaller‐than‐expected wage changes because of the intersector labour movement. In line with the theoretical predictions, two notable empirical results are presented. First, an occupation's exposure to offshoring has non‐significant, albeit negative, effects on wages. Second, the more an occupation is exposed to offshoring, the lower its employment in the manufacturing sector as a share of its total employment. Furthermore, these effects are larger for more routine occupations or those requiring less education.     

Financial liberalization, structural change, and real exchange rate appreciations

The last twenty years have witnessed periods of sustained appreciations of the real exchange rate in emerging economies. The case of Mexico between 1988 and 2002 is representative of several episodes in Latin America and Central and Eastern Europe in which countries opening to capital flows experienced large appreciations accompanied by a significant reallocation of workers towards the non-tradable sector. We account for these facts using a two sector dynamic general equilibrium model of a small open economy with frictions to labor reallocation and two driving forces: (i) A decline in the cost of borrowing in foreign markets, and (ii) differential productivity growth across sectors. These two mechanisms account together for 60% of the decline in the domestic relative price of tradables in Mexico and for a large fraction of the observed reallocation of labor across sectors. The decline in the interest rate faced by Mexico in international markets is quantitatively the most important channel. Our results are robust to the inclusion of terms of trade into the model.     

Labor demand and trade reform in Latin America

Trade liberalization is thought to result in higher own-wage elasticities of labor demand, particularly for unskilled labor, with adverse implications for both labor market volatility and wage dispersion. The paper first argues that theoretically the link between liberalization and labor-demand elasticities is less clear than has previously been asserted. It then uses dynamic panel techniques to estimate labor-demand relations for manufacturing establishments in Chile, Colombia, and Mexico across periods of trade policy reform. The results do not strongly support the hypothesis that trade liberalization has a direct impact on own-wage elasticities.     

Why trucks jump: Offshoring and product characteristics

In this paper, we study the role of vertical product differentiation in the decision to allocate production between domestic and foreign plants. To do so, we examine the first wave of light-truck offshoring to Mexico that occurred due to substantially lower post-NAFTA trade barriers and a coincident increase in US demand for light trucks. In contrast to the typical assumption, but similar to many other industries, the need for additional capacity was accommodated by investment in both the US and Mexico for the same models of light trucks. Using a new dataset that details the extent of offshoring and domestic production within models, we document sharp differences in how capacity was utilized. Specifically, within models, we find that automakers offshored varieties which tend to be older in design vintage, lower scale, and less complex to produce. In contrast, we find that varieties “inshored” to newer capacity in the US exhibit the opposite characteristics. This highlights the important role of vertical differentiation and the associated variation in production complexity for the sorting of production across borders. A product with a large degree of vertical differentiation may provide scope for a firm to maximize profits by “inshoring” the more complex varieties while offshoring the less complex versions.     

Emerging market fluctuations: What makes the difference?

Aggregate fluctuations in emerging countries are different from those in developed countries. Using data from Mexico and Canada, this paper decomposes these differences in terms of reduced form shocks that affect aggregate efficiency and distort the decisions of households about how much to invest, consume, and work in a standard model of a small open economy. The decomposition exercise suggests that most of these differences are explained by fluctuations in aggregate efficiency, distortions in labor choices over the business cycle, and distortions in intertemporal consumption choices. Successful models for emerging markets fluctuations should include primitive shocks and frictions that generate these features. Models with financial frictions in the form of working capital constraints, possibly augmented with endogenous collateral constraints, are consistent with these findings.     

Jobs and Exposure to International Trade within the Service Sector in Sweden

To establish in which service industries there is international trade (or it may potentially exist), we calculate locational Ginis for different industries. The basic idea is that from this measure of regional concentration of different activities within a country we can identify industries where there appears to be regional trade, and hence also a potential for international trade. Based on our method, we find that: (i) the number of employed in tradable service appears to be at least as large as in the manufacturing sector, (ii) tradable service is much more skill intensive than manufacturing, and (iii) lately, the employment in tradable service has increased substantially. We argue that the last mentioned result is consistent with the substantial growth of skilled labour in Sweden since the mid‐1990s (Rybczynski effect) and factors leading to increased relative demand for skilled labour. Particularly, increased competition from and offshoring to low‐wage countries seem recently to have had a considerable impact on the creation of skilled jobs and the displacement of less skilled jobs in the tradable sector in Sweden. Furthermore, we apply a similar method as for industries to identify tradable occupations. Using our classification of tradable industries and tradable occupations in a Mincer type wage equation, we find that workers in such industries and occupations receive a wage premia of 12–13 per cent.     

The impacts of trade liberalization on informal labor markets: A theoretical and empirical evaluation of the Brazilian case

Following trade liberalization, several developing countries experienced a sharp increase in the share of informal manufacturing employment. In this paper, I examine the impacts of trade liberalization on the labor markets of a small open economy, in an environment in which tariffs affect firms' payroll tax compliance decisions. I demonstrate that a reduction in domestic import tariffs reduces the average formal wage and show that the direction of the effect on the share of informal employment depends on the initial labor market conditions. A cut in trading partner import tariffs decreases the share of domestic informal employment and increases the average formal wage. I confirm the model's principal findings empirically, using data from the 1989–2001 Brazilian trade liberalization episode. I find the results robust to endogeneity and self-selection concerns, which are addressed, respectively, using instrumental variable and switching regression approaches.     

Treasury Bond risk and return, the implications for the hedging of consumption and lessons for asset pricing

All consumption-based models of asset pricing imply that the relation between the conditional mean and conditional volatility of any asset reflects the effectiveness of holding that asset as a hedge against intertemporal variation in the marginal utility of consumption. For Treasury Bonds of various maturities, we find significant positive relations. Our empirical findings support the conclusion that investors must sell bonds short to hedge shocks to marginal utility, because realized bond returns tend to be high (low) when investors least (most) desire an additional dollar of consumption. Implications for special cases of the general consumption-based model are also discussed.     

Global financial conditions,country spreads and macroeconomic fluctuations in emerging countries

This paper uses a panel structural vector autoregressive (VAR) model to investigate the extent to which global financial conditions, i.e., a global risk-free interest rate and global financial risk, and country spreads contribute to macroeconomic fluctuations in emerging countries. The main findings are: (1) global financial risk shocks explain about 20% of movements both in the country spread and in the aggregate activity in emerging economies. (2) The contribution of global risk-free interest rate shocks to macroeconomic fluctuations in emerging economies is negligible. Its role, which was emphasized in the literature, is taken up by global financial risk shocks. (3) Country spread shocks explain about 15 percent of the business cycles in emerging economies. (4) Interdependence between economic activity and the country spread is a key mechanism through which global financial shocks are transmitted to emerging economies.     

The effects of offshoring on employer-provided training

This study examines how offshoring affects employers’ investment in training. Departing from the standard assumption in the literature that low-skilled jobs are transferred to developing countries while high-skilled jobs are still performed in the Home Country, we argue that whether a productive activity is offshored depends on whether its associated occupation is offshorable, regardless of its skill content. Our theoretical model suggests that the offshoring of productive activities involving offshorable occupations raises the wage rate for non-offshorable occupations in the Home Country, and thus reduces the incentive for firms to provide training in non-offshorable occupations. The effects of offshoring on training for offshorable occupations, however, are ambiguous. Based on two new measures of offshoring and data from the National Longitudinal Survey of Youth 1979 (1989–2004), we empirically investigate the relationship between offshoring and employer-provided training in the United States. For non-offshorable occupations, we find that offshoring has a significant negative relationship with the incidence of training, but does not have much, if any, significant relationship with the intensity of training. For offshorable occupations, offshoring does not have any significant relationship with either the incidence or the intensity of employer-provided training. These findings are in line with our theoretical model.     

Embracing realism and recognizing choice in IT offshoring initiatives

As more and more firms move activities offshore to countries that are distantly located from their home base of operations, the initial advantages of making this move are increasingly tempered by realities on the ground. For firms contemplating offshoring today, it is important to weigh the advantages and disadvantages of undertaking or extending this strategy in light of what we now know. Broadly speaking, successful offshoring must begin with an understanding of the market and competitive pressures that encourage offshoring, and then build on recognition of how these pressures can be addressed using or modifying the offshoring options currently practiced. Our discussion of these issues is based on analysis of offshoring of IT-enabled services by Fortune Global 500 firms in such areas as software development and business processes that support customer interaction.