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Exports, Imports and Wages:Evidence from Matched Firm-Worker-Product Panels

Authors 
Pedro Martins
Publication Year 
2010
JEL Code 
F16 - Trade and Labor Market Interactions
J31 - Wage Level and Structure; Wage Differentials by Skill, Training, Occupation, etc.
F15 - Economic Integration
Abstract 
The analysis of the effects of firm-level international trade on wages has so far focused on the role of exports, which are also typically treated as a composite good. However, we show in this paper that firm-level imports can actually be a wage determinant as important as exports. Furthermore, we also find significant differences in the relationship between trade and wages across types of products. In particular, firms that increase their exports (imports) of high- (intermediate-) technology products tend to increase their salaries. Our analysis is based on unique data from Portugal, obtained by merging a matched firm-worker panel and a matched firm-transaction panel. Our data set follows the population of manufacturing firms and all their workers from 1995 to 2005 and allows for several control variables, including jobspell fixed effects.
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