Exports and Productivity Growth: First Evidence from a Continuous Treatment Approach

A recent survey of 54 micro-econometric studies reveals that exporting firms are more productive than non-exporters. However, previous empirical studies show that exporting does not necessarily improve productivity. One possible reason for this result is that most previous studies are restricted to analysing the relationship between a firm’s export status and the growth of its labour productivity, using the firms’ export status as a binary treatment variable and comparing the performance of exporting and non-exporting firms. In this paper, we apply the newly developed generalised propensity score (GPS) methodology that allows for continuous treatment, that is, different levels of the firms’ export activities. Using the GPS method and a large panel data set for German manufacturing firms, we estimate the relationship between a firm’s export-sales ratio and its labour productivity growth rate. We find that there is a causal effect of firms’ export activities on labour productivity growth. However, exporting improves labour productivity growth only within a sub-interval of the range of firms’ export-sales ratios.

[1]  J Wagner.  Unobserved firm heterogeneity and the size-exports nexus: Evidence from German panel data , 2003 .

[2]  A. Riahi‐Belkaoui,et al.  The effects of the degree of internationalization on firm performance , 1998 .

[3]  P. Todd,et al.  Evaluating Preschool Programs When Length of Exposure to the Program Varies: A Nonparametric Approach , 2000 .

[4]  J. Wagner,et al.  Who are the Workers Who Never Joined a Union? Empirical Evidence from Germany , 2005, SSRN Electronic Journal.

[5]  Gordon H. Hanson,et al.  Spillovers, Foreign Investment, and Export Behavior , 1994 .

[6]  Leslie E. Papke,et al.  Econometric Methods for Fractional Response Variables with an Application to 401(K) Plan Participation Rates , 1993 .

[7]  G. Imbens.  The Role of the Propensity Score in Estimating Dose-Response Functions , 1999 .

[8]  Sukkyun Chung,et al.  Productivity and Turnover in the Export Market: Micro-level Evidence from the Republic of Korea and Taiwan (China) , 2000 .

[9]  R. Bühner,et al.  Assessing international diversification of West German corporations , 1987 .

[10]  J Wagner,et al.  A Note on the Firm Size – Export Relationship , 2001 .

[11]  Helmut Fryges.  The export–growth relationship: estimating a dose-response function , 2009 .

[12]  Daniel P. Sullivan.  Measuring the Degree of Internationalization of a Firm , 1994 .

[13]  Chiara Criscuolo,et al.  Global Engagement and the Innovation Activities of Firms , 2005 .

[14]  J. Hardin,et al.  Generalized Linear Models and Extensions , 2001 .

[15]  Salvador Barrios,et al.  Explaining Firms' Export Behaviour: R&D, Spillovers and the Destination Market , 2003 .

[16]  Helmut Fryges,et al.  The Export-Growth Relationship: Estimating a Dose-Response Function , 2006 .

[17]  Robert M. Grant,et al.  Multinationality and Performance among British Manufacturing Companies , 1987 .

[18]  Chad Syverson,et al.  Reallocation, Firm Turnover, and Efficiency: Selection on Productivity or Profitability? , 2005 .

[19]  Onathan,et al.  Plants and Productivity in International Trade , 2004 .

[20]  A. Bernard,et al.  Exceptional Exporter Performance: Cause, Effect, or Both? , 1997 .

[21]  Davide Castellani.  Export Behavior and Productivity Growth: Evidence from Italian Manufacturing Firms , 2001 .

[22]  B. Aw,et al.  Productivity and the export market: A firm-level analysis , 1995 .

[23]  Roger Newson,et al.  Review of Generalized Linear Models and Extensions by Hardin and Hilbe , 2001 .

[24]  Carlos A. Flores.  Estimation of Dose-Response Functions and Optimal Doses with a Continuous Treatment , 2007 .

[25]  Mark Doms,et al.  Understanding Productivity: Lessons from Longitudinal Microdata , 2000 .

[26]  J Wagner,et al.  The Causal Effects of Exports on Firm Size and Labor Productivity: First Evidence from a Matching Approach , 2002, Microeconometric Studies of Firms' Imports and Exports.

[27]  Mark J. Roberts,et al.  The Decision to Export in Colombia: An Empirical Model of Entry with Sunk Costs , 1997 .

[28]  Andrew B. Bernard,et al.  Exporters, Jobs, and Wages in U.S. Manufacturing: 1976-1987 , 1995 .

[29]  J. Wagner.  Exporte und Produktivität in mittelständischen Betrieben Befunde aus der niedersächsischen Industrie (1995 – 2004) , 2005 .

[30]  Z. Griliches.  Patent Statistics as Economic Indicators: a Survey , 1990 .

[31]  D. Rubin,et al.  The central role of the propensity score in observational studies for causal effects , 1983 .

[32]  Petra E. Todd,et al.  Evaluating Preschool Programs When Length of Exposure to the Program Varies: A Nonparametric Approach , 2000, Review of Economics and Statistics.

[33]  Leo Sveikauskas,et al.  The Contribution of R&D to Productivity Growth. , 1986 .

[34]  Kannan Ramaswamy,et al.  An Empirical Examination of the Form of the Relationship Between Multinationality and Performance , 1999 .

[35]  G. Imbens,et al.  The Propensity Score with Continuous Treatments , 2005 .

[36]  J Wagner,et al.  Exports and Productivity: A Survey of the Evidence from Firm Level Data , 2005 .

[37]  Daniel P. Sullivan.  The "Threshold of Internationalization:" Replication, Extension, and Reinterpretation , 1994 .

[38]  J Wagner,et al.  Exports and success in German manufacturing , 1997 .

[39]  J Wagner.  International Firm Activities and Innovation: Evidence from Knowledge Production Functions for German Firms , 2006 .

[40]  Helmut Fryges.  Hidden Champions - How Young and Small Technology-Oriented Firms Can Attain High Export-Sales Ratios , 2006 .

[41]  R. Duane Ireland,et al.  A Mid-Range Theory of the Interactive Effects of International and Product Diversification on Innovation and Performance , 1994 .

[42]  James K. Hammitt,et al.  Export activity and productivity: Evidence from the Taiwan electronics industry , 1999 .

[43]  D. Greenaway,et al.  Does Exporting Increase Productivity? A Microeconometric Analysis of Matched Firms , 2004 .

[44]  Zvi Griliches,et al.  Issues in Assessing the Contribution of Research and Development to Productivity Growth , 1979 .