Mobile internet access allows for flexibility with respect to working time and working place. We analyse whether employees’ use of mobile internet access improves firms’ labour productivity. Our data set contains 2143 German firms and refers to the year 2014, when high-speed mobile internet...

Die Bedeutung der internationalen Beschaffung von Vorleistungen hat in den zurückliegenden Dekaden zugenommen. Dies gilt auch für Güter aus dem Bereich der Informations- und Kommunikationstechnologien (IKT), beispielsweise Mikrochips, die ein wichtiger Input in der heimischen Produktion sind...

Our paper contributes to the discussion about Europe’s digital sovereignty. We analyze the relationship between firm performance and the diversification of sourcing countries for imported ICT goods. The analysis is based on administrative data for 3888 German manufacturing firms that imported...

Using a unique German firm-level data set, we provide empirical evidence for a productivity sorting along two dimensions: international activity and technology choice. We consider domestic and exporting firms and measure technology choice by firms’ actual use of advanced information technology...

The paper provides empirical evidence for the causal impact of broadband Internet on the economic performance of German firms. Performance is measured in terms of labour productivity and realised process and product innovations. The analysis refers to the early phase of DSL expansion in Germany...

The paper analyses the relationship between two major challenges firms are faced to: using the potentials of information technologies (IT) as an enabler of process innovations on the one hand and an ageing workforce that might interfere these potentials on the other hand. Econometric results...

We implement an endogeneous switching-regression model for labour productivity and firms' decision to use business-to-business (B2B) e-commerce. Our approach allows B2B usage to affect any parameter of the labour productivity equation and to properly take account of strategic complementarities...

We examine the link between Internet usage and political ignorance. We construct a novel Index as a direct measure of individuals’ indifference with respect to political issues which determines the degree of individual political ignorance. Our econometric analysis is based on a rich data set...