Publications des chercheurs de PSE

How has globalization affected the relative taxation of labor and capital, and why? To address this question we build and analyze a new database of effective macroeconomic tax rates covering 150 countries since 1965, constructed by combining national accounts data with government revenue statistics. We obtain four main findings: (1) The effective tax rates on labor and capital converged globally since the 1960s, due to a 10 percentage-point increase in labor taxation and a 5 percentage-point decline in capital taxation. (2) The decline in capital taxation is concentrated in high-income countries. By contrast, capital taxation increased in developing countries since the 1990s, albeit from a low base.(3) Consistently across a variety of research designs, we find that the rise in capital taxation in developing countries can be explained by a tax-capacity effect of international trade: Trade openness leads to a concentration of economic activity in formal corporate structures, where capital taxes are easier to impose. (4) At the same time, international economic integration reduces statutory tax rates, due to increased tax competition. In highincome countries, this negative tax competition effect of trade has dominated, while in developing countries the positive tax-capacity effect of international trade appears to have prevailed.

This paper examines the labor market implications of the EU posting policy, a large temporary migration program facilitated by the liberalization of the free provision of services in Europe. Posting allows EU firms to send ("post") their employees abroad to export customer-facing services. Combining administrative data and quasi-experimental policy variation, I find that the policy permanently increased total factor mobility in Europe without crowding-out of traditional migration. This result suggests that unrealized gains from trade in factor services remained despite the absence of regulatory barriers to trade and migration in the EU. Furthermore, posted workers are mostly sent from low-wage countries to perform manual tasks in sectors formerly insulated from trade, and they represent a substantial share of EU migrant workers. In receiving countries, posting had persistent negative effects on employment for domestic workers in the more exposed sectors and local labor markets, but it had no effects on domestic wages. In low-wage sending countries, firms in formerly "non-tradable" sectors experienced increased sales, profits and tax payments when exporting services through posting. Posted workers earn more once sent abroad but remain paid at lower wages than comparable domestic workers in the receiving country. Wage gains for posted workers are mostly explained by minimum wages enforced by the EU policy, highlighting the role of labor market regulations in shaping the way gains from globalization are shared between labor and capital-owners in origin countries.

Advances in communication technology make it possible for workers in India to supply business services to head offices located anywhere. This has the potential to put high-wage workers in direct competition with much lower paid Indian workers. Service trade, however, like goods trade, is subject to strong distance effects, implying that the remote supply of services remains limited. We investigate this proposition by deriving a gravity-like equation for service trade and estimating it for a large sample of countries and different categories of service trade. We find that distance costs are high but are declining over time. Our estimates suggest that delivery costs create a significant advantage for local workers relative to competing workers in distant countries.

We propose and construct novel measures of the effectiveness and potential of trade blocs, combining estimation with granular data and simulation with a New Quantitative Trade Model. We deploy our methods and new indexes to quantify the potential benefits from (i) further integration within the largest and most successful trade liberalization effort in the world -the Single European Market -and (ii) a possible enlargement. Three main results and implications stand out from our analysis. First, European integration has been very effective in promoting trade among its members, with heterogeneous effects across industries and member states. Second, and most novel and important, our estimates reveal that only half of the potential benefits from EU membership have been realized to date. Third, EU accession will generate very large gains from trade for the new joiners and moderate gains for existing members, with larger benefits for some small and peripheral EU members. Importantly, our methods enable us to construct confidence bounds for the effects of EU enlargement.

The debate on trade wars and currency wars has re-emerged since the Great recession of 2009. We study the two forms of non-cooperative policies within a single framework. First, we compare the elasticity of trade flows to import tariffs and to the real exchange rate, based on product level data for 110 countries over the 1989-2013 period. We find that a 1 percent depreciation of the importer's currency reduces imports by around 0.5 percent in current dollar, whereas an increase in import tariffs by 1 percentage point reduces imports by around 1.4 percent. Hence the two instruments are not equivalent. Second, we build a stylized short-term macroeconomic model where the government aims at internal and external balance. We find that, in this setting, monetary policy is more stabilizing for the economy than trade policy, except when the internal transmission channel of monetary policy is muted (at the zero-lower bound). One implication is that, in normal times, a country will more likely react to a trade "aggression" through monetary easing rather than through a tariff increase. The result is reversed at the ZLB.

In this paper, we study how firm-level export performance is affected by Real Exchange Rate (RER) volatility and investigate whether this effect depends on existing financial constraints. Our empirical analysis relies on export data for more than 100,000 Chinese exporters over the 2000-6 period. We confirm a trade-deterring effect of RER volatility. We find that firms' decision to begin exporting and the exported value decrease for destinations with a higher exchange rate volatility and that this effect is magnified for financially vulnerable firms. As expected, financial development seems to dampen this negative impact, especially on the intensive margin of export. These results provide micro-founded evidence suggesting that the existence of well-developed financial markets allows firms to hedge exchange rate risk. The results also support a key role of financial constraints in determining the macro impact of RER volatility on real outcomes.

This paper investigates the role played by firms' managerial skills in the heterogeneous reaction of exporters to common exogenous changes in their international competitiveness (here captured by changes in the real exchange rate). Relying on a simple theoretical framework, we show that firms with better managerial skills have higher profits, market power, and are able to adapt their markup more when faced with a competitiveness shock. We test this prediction relying on detailed firm-product-destination level export data from France for the period 1995-2007 matched with specific information on the firms' share of managers. Our findings show that managerial intensive firms have larger exporter price elasticity to real exchange rate variations. The effect is not trivial: in the wake of a depreciation, exporters whose management intensity is one standard deviation higher than the average, increase their prices by 51% to 73% more than the average exporter. This finding is robust to controlling for the alternative explanations suggested by the previous literature to explain the heterogeneous pass-through of firms.

Les nouvelles techniques d'ingénierie végétale (NTIV) peuvent améliorer considérablement la production et la qualité des aliments. Certains consommateurs et régulateurs du monde entier pourraient être réticents à accepter de tels produits et l’introduction de ces produits sur le marché mondial pourrait rester faible. Nous développons un modèle économique prenants en compte l'investissement en R&D dans les innovations alimentaires afin d'identifier les conditions dans lesquelles la technologie NTIV émerge dans un contexte de commerce international. Le cadre intègre le consentement à payer des consommateurs (CAP) pour le nouvel aliment, l'incertitude des processus de R&D, le coût réglementaire associé à l'approbation et la concurrence entre les produits nationaux et étrangers. Le modèle permet l'analyse quantitative de l’apparition de nouveaux aliments qui pourraient être introduits sur les marchés puis commercialisés au-delà des frontières. Nous appliquons le modèle à un cas hypothétique de pommes améliorées avec des NTIV. Les résultats de la simulation suggèrent que les interdictions d'importation et les valeurs élevées de coûts fixes peuvent réduire les investissements en R&D dans les NTIV à des niveaux sous-optimaux.

This study documents the implications of financial vulnerability for export diversification in developing economies. Financial crises, by increasing the incidence of sunk costs of entry into exporting, reduce firm export dynamics. Financially-vulnerable exporters are not able to fully realize economies of scale in production and access better-sophisticated technologies. The number of products and destinations per exporter are therefore likely to decrease in times of crisis. We use a comprehensive crosscountry dataset on export dynamics, with data covering 1997-2011 for 34 developing countries to investigate this issue. Building on the generalized difference-indifferences procedure proposed by Rajan & Zingales (1998) to remove any endogeneity bias, the results point to a negative and economically large effect of financial vulnerability on export diversification. Financial crises reduce export dynamics disproportionately more in financially dependent industries. This effect is less pronounced in countries with initially more open capital account, suggesting that portfolio inflows are good substitutes for underdeveloped domestic financial markets.

How do immigrants promote exports? To answer this question we propose an empirical framework allowing to disentangle the role of migration networks that operate at a bilateral level from that of productivity channels (knowledge diffusion and increased workforce diversity) that operate at the aggregate level. We find evidence supporting both, at the extensive as well as at the intensive margin. The results are robust to using various IV strategies. While richer countries’ exports tend to benefit more from immigrants’ diversity (especially in sectors characterized by complex production processes), developing countries benefit from knowledge diffusion more.

With asymmetric climate policies, regulation in one country can be undercut by missions growth in another. Previous research finds evidence that regulation erodes the competitiveness of domestic firms and leads to higher imports, but increased imports need not imply increased emissions if domestic sales are jointly determined with export sales or if emission intensity of manufacturing adjusts endogenously to foreign demand. In this paper, we estimate for the first time how production and emissions of manufacturing firms in one country respond to foreign demand shocks in trading partner markets. Using a panel of large Indian manufacturers and an instrumental variable strategy, we find that foreign demand growth leads to higher exports, domestic sales, production, and CO2 emissions, and slightly lower emission intensity. The results imply that a representative exporter facing the average observed foreign demand growth over the period 1995-2011 would have increased CO2 emissions by 1.39% annually as a result of foreign demand growth, which translates into 6.69% total increase in CO2 emissions from Indian manufacturing over the period. Breaking down emission intensity reduction into component channels, we find some evidence of product-mix effects, but fail to reject the null of no change in technology. Back of the envelope calculations indicate that environmental regulation that doubles energy prices world-wide (except in India) would only increase CO2 emissions from India by 1.5%. Thus, while leakage fears are legitimate, the magnitude appears fairly small in the context of India.