The Role of Globalization in the Within-Industry Shift Away from Unskilled Workers in France

Growth in international trade and globalization has been correlated in nearly all countries with a worsening of the less skilled labor situation relative to the skilled. In this empirical paper, I show that an important component of recent globalization in France has been a huge growth in vertical specialization -- the completion of the different production stages of a good in different countries. By shifting relative labor demand across countries, globalization of this form could explain the poor relative showing of unskilled labor in industrial countries. Using input-output tables and labor data, I find that in France vertical specialization -- defined as the share of imported inputs in production -- rose from 9% in 1977 to 14% in 1993. Further estimations show that vertical specialization contributed from 11% to 15% of the decline in the share of unskilled workers in French manufacturing employment for the 1977-1985 period and for 25% of the decline in the 1985-1993 period.

Does importing more inputs raise exports? Firm level evidence from France

Following Melitz (2003)'s seminal paper, several theoretical and empirical studies have shown that only the subset of most productive firms export. While other studies provide evidence on a positive effect of an increase in imported inputs on firms' productivity, the link between imported intermediate inputs and export scope has not been made. This paper bridges the gap by studying the impact of imported inputs on the margins of exports. We use a unique firms' level database of imports at the product (HS6) level provided by French Customs for the 1995-2005 period. Access to new varieties of inputs may increase productivity, and thereby exports, through better complementarity of inputs, transfer of technology and/or decreased inputs price index. We test for these different mechanisms by distinguishing the origin of imports (developing vs. developed countries) and constructing an exact price index a la Broda and Weinstein (2006). We find a significant impact of higher diversification and increased number of imported inputs varieties on firm's TFP and export scope. Whereas the complementarity and transfer of technology mechanisms are supported by our results, the price effect seems very limited.Firm heterogeneity, imported inputs, TFP, export scope, varieties, price index, firm-level data

Export Diversification: What’s behind the Hump?

The paper explores the evolution of export diversification patterns along the economic development path. Using a large database with 156 countries over 19 years at the HS6 level of disaggregation (4’991 product lines) we look for action at the “intensive” and “extensive” margins (diversification of export values among active product lines and by addition of new product lines respectively) using various export concentration indices and the number of active export lines. We also look at new product introduction as an indicator of “export-entrepreneurship”. We find a hump-shaped pattern of export diversification similar to what Imbs and Wacziarg (2003) found for production and employment. Diversification and subsequent re-concentration take place mostly along the extensive margin, although the intensive margin follows the same pattern. This hump-shaped pattern is consistent with the conjecture that countries travel across diversification cones, as discussed in Schott (2003, 2004) and Xiang (2007).international trade, Export diversification

OECD imports : diversification of suppliers and quality search

This paper explores the evolution of OECD imports over time, measuring their concentration across origin countries at the product level. The authors find evidence of diversification followed, in the very last years of the sample period (post-2000), by a slight re-concentration. This re-concentration is entirely explained by the growing importance of Chinese products in OECD imports. They also find evidence of relatively more volatile concentration levels for goods with high quality heterogeneity, with temporary phases of re-concentration on goods with higher unit values. Both findings are consistent with a simple model of adverse selection and quality screening by OECD buyers predicting that diversification happens by"bouts"rather than continuously, with temporary re-concentration on higher-quality suppliers.Markets and Market Access,Microfinance,Labor Policies,E-Business,Agribusiness&Markets

Export Diversification:What’s behind the Hump?

The paper explores the evolution of export diversification patterns along the economic development path. Using a large database with 159 countries over 17 years at the HS6 level of disaggregation (4’998 product lines) we look for action at the “intensive” and “extensive” margins (diversification of export values among active product lines and by addition of new product lines respectively) using various export concentration indices and the number of active export lines. We also look at new product introduction as an indicator of “export-entrepreneurship”. We find a hump-shaped pattern of export diversification similar to what Imbs and Wacziarg (2003) found for production and employment. Low and Middle income countries diversify mostly along the extensive margin whereas high income countries diversify along the intensive margin and ultimately re-concentrate their exports towards fewer products. Such hump-shaped pattern is consistent with the conjecture that countries travel across diversification cones as discussed in Schott (2003, 2004) and Xiang (2007).Export diversification, international trade, Latin America

Trade Diversification, Income, and Growth: What Do We Know?

Export diversification, international trade, Growth and employment

OECD imports : diversification and quality search

This paper explores the evolution of OECD imports over time and as a function of income levels, measuring the concentration of those imports across origin countries at the product level. The authors find evidence of diversification followed, in the last years of the sample period (post-2000), by a slight re-concentration. This re-concentration is entirely explained by the growing importance of Chinese products in OECD imports. They also find evidence of relatively more volatile concentration levels for differentiated goods, consistent with a simple model of adverse selection and screening of suppliers by OECD buyers. Finally, they find that"accession"to OECD markets occurs directly (rather than after acquiring prior export experience on other markets) for more than half of the (extra-OECD) exporter/product pairs, but that one to eight years of experience enhances subsequent survival on OECD markets. Exports that reach OECD markets after more than eight years of experience elsewhere tend to survive less.Markets and Market Access,Economic Theory&Research,Labor Policies,Debt Markets,Microfinance

Export Diversification: What's behind the Hump?

The paper explores the evolution of export diversification patterns along the economic development path. Using a large database with 156 countries over 19 years at the HS6 level of disaggregation (4'991 product lines) we look for action at the “intensive” and “extensive” margins (diversification of export values among active product lines and by addition of new product lines respectively) using various export concentration indices and the number of active export lines. We also look at new product introduction as an indicator of “export-entrepreneurship”. We find a hump-shaped pattern of export diversification similar to what Imbs and Wacziarg (2003) found for production and employment. Diversification and subsequent re-concentration take place mostly along the extensive margin, although the intensive margin follows the same pattern. This hump-shaped pattern is consistent with the conjecture that countries travel across diversification cones, as discussed in Schott (2003, 2004) and Xiang (2007).international trade;Export diversification

Export Diversification:What's behind the Hump?

The paper explores the evolution of export diversification patterns along the economic development path. Using a large database with 159 countries over 17 years at the HS6 level of disaggregation (4'998 product lines) we look for action at the “intensive” and “extensive” margins (diversification of export values among active product lines and by addition of new product lines respectively) using various export concentration indices and the number of active export lines. We also look at new product introduction as an indicator of “export-entrepreneurship”. We find a hump-shaped pattern of export diversification similar to what Imbs and Wacziarg (2003) found for production and employment. Low and Middle income countries diversify mostly along the extensive margin whereas high income countries diversify along the intensive margin and ultimately re-concentrate their exports towards fewer products. Such hump-shaped pattern is consistent with the conjecture that countries travel across diversification cones as discussed in Schott (2003, 2004) and Xiang (2007).Export diversification;international trade;Latin America