Robust estimates of exporter productivity premia in German business services enterprises
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Institut für Volkswirtschaftslehre der Universität Lüneburg, 2011. (Working paper series in economics; No. 207).
Research output: Working paper › Working papers
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TY - UNPB
T1 - Robust estimates of exporter productivity premia in German business services enterprises
AU - Wagner, Joachim
AU - Vogel, Alexander
PY - 2011/1
Y1 - 2011/1
N2 - A large and growing number of micro-econometric studies show that exporting firms are more productive than firms that sell their products on the home market only. This so-called exporter productivity premium qualifies as a stylized fact. Only recently researchers started to look at the role of extreme observations, or outliers, in shaping these findings. These studies use micro-econometric methods that are robust against outliers to show that very small shares of firms with extreme values drive the result. The large exporter productivity premium found for samples of firms including outliers are dramatically smaller in samples without these extreme observations. Evidence on this, however, is limited so far to firms from manufacturing industries. This note adds comparable evidence for firms from the business services industries. We find that the estimated exporter productivity premium is statistically significant and relevant from an economic point of view when a standard fixed effects estimator is used to control for unobserved firm characteristics, but that it drops to zero when a robust estimatoris applied.
AB - A large and growing number of micro-econometric studies show that exporting firms are more productive than firms that sell their products on the home market only. This so-called exporter productivity premium qualifies as a stylized fact. Only recently researchers started to look at the role of extreme observations, or outliers, in shaping these findings. These studies use micro-econometric methods that are robust against outliers to show that very small shares of firms with extreme values drive the result. The large exporter productivity premium found for samples of firms including outliers are dramatically smaller in samples without these extreme observations. Evidence on this, however, is limited so far to firms from manufacturing industries. This note adds comparable evidence for firms from the business services industries. We find that the estimated exporter productivity premium is statistically significant and relevant from an economic point of view when a standard fixed effects estimator is used to control for unobserved firm characteristics, but that it drops to zero when a robust estimatoris applied.
KW - Economics, empirical/statistics
KW - Exporter productivity premium
KW - services firms
KW - robust estimation
KW - panel data
M3 - Working papers
T3 - Working paper series in economics
BT - Robust estimates of exporter productivity premia in German business services enterprises
PB - Institut für Volkswirtschaftslehre der Universität Lüneburg
ER -