TY - GEN A1 - Fryges, Helmut A1 - Wagner, Joachim T1 - Exports and productivity growth - First evidence from a continuous treatment approach N2 - Abstract: A recent survey of 54 micro-econometric studies reveals that exporting firms are more productive than non-exporters. On the other hand, 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. KW - Ausfuhrüberschuss KW - Arbeitsproduktivität KW - Export-sales ratio KW - labour productivity KW - continuous treatment KW - dose-response function Y1 - 2007 UR - http://pub-data.leuphana.de/frontdoor/index/index/docId/472 ER -