firms always have a higher market share, there is no monotonic relationship between firms' productivity level and their … effect". Therefore, the incentive to add more products weakens as productivity rises. This leads to Lemma 3 in Feenstra and … evidence is in line with the results from the theoretical model. -- multi-product firms ; productivity ; optimal product scope …

manufacturing firms. First, there is a negative correlation between firms' productivity and their export share to low … found between the share of exports to lowincome countries and either productivity or R&D intensity is never in line with the …

-exporters. However, many firms from the lower end of the productivity distribution are exporters. Germany is a case in point. A recent … study reports that these low-productivity exporters are not marginal exporters defined according to the share of exports in … exports is much higher among exporters from the lower end of the productivity distribution than among highly productive …

find a high degree of downward nominal wage rigidity, which for rates of inflation lower than three percent is shown to …

document the first empirical results on the relationship between imports and productivity for Germany, a leading actor on the … systematically by testing for self-selection of more productive firms into importing, and for productivity-enhancing effects of … imports ('learning-by-importing'). We find a positive link between importing and productivity. From an empirical model with …

In this paper, we estimate the causal effect of ambient air pollution on individuals' productivity by using panel data … and players. Our analysis shows negative and non-linear effects of air pollution on short-run productivity. We further …