An astonishing 33% of all firm-product-destination export spells in Danish data turn out to be isolated single-month one-off export events (observed once in a 49 month window). On average, for an export-active firm, such one-off exports account for 17% of total foreign sales. These patterns...

Job-Market signaling is ranked high among the explanations why individuals engage voluntarily in OSS projects. If true, signaling implies the existence of a wage premium for OSS engagement. However, due to a lack of data this issue has not been tested previously. Based on a novel data set...

Why is it that exporter productivity premia (EPP) differ so widely in size? We take this question to the theory and to the data. We derive the sectoral EPP in a standard heterogeneous firms trade model and apply the insights from the model to 13 years of data for all Danish manufacturing firms....

An astonishing 33% of all firm-product-destination export spells in Danish data turn out to be isolated single-month one-off export events (observed once in a 49 month window). On average, for an export-active firm, such one-off exports account for 17% of total foreign sales. These patterns...

Why is it that exporter productivity premia (EPP) differ so widely in size? We take this question to the theory and to the data. We derive the sectoral EPP in a standard heterogeneous firms trade model and apply the insights from the model to 13 years of data for all Danish manufacturing firms....

The German secondary school stream-system has three levels: minimum (Hauptschule), general (Realschule), and university-entry (Gymnasium). Using the German Socio-Economic Panel (GSOEP), we examine determinants of school attainment of German and foreign pupils in West Germany 1984-1993 using an...

The German secondary school stream-system has three levels: minimum (Hauptschule), general (Realschule), and university-entry (Gymnasium). Using the German Socio-Economic Panel (GSOEP), we examine determinants of school attainment of German and foreign pupils in West Germany 1984-1993 using an...