The effect of intra- and interregional labour mobility on plant performance in Denmark: The significance of related labour inflows

This article investigates the impact of labour mobility on plant performance in Denmark. Our study shows that the effect of labour mobility can only be assessed when one accounts for the type of skills that flow into the plant and the degree to which these match the existing skills at the plant level. As expected, we found that the inflow of skills that are related to skills in the plant impacts positively on plant productivity growth, while inflows of skills that are similar to the plant skills have a negative effect. We used a sophisticated indicator of revealed relatedness that measures the degree of skill relatedness between sectors on the basis of the intensity of labour flows between sectors. Intra-regional mobility of skilled labour had a negative effect on plant performance, but the impacts of intra- and inter-regional mobility depended on the type of skills that flow into the plant.