The aim of our analysis is the evaluation of the total and sectoral convergence of labour productivity between 182 … and low productivity, respectively 'core' and 'periphery'. Our results show significant sígma-convergence in aggregate … labour productivity, market and non-market services in the first years and a slightly divergence in the second period. Sigma …

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 …

this exporter productivity premium is due to extra costs of exporting that can be covered only by more productive firms … fixed-effects estimator, no such exporter productivity premium is found for firms from manufacturing and services industries … systematically investigate the role of outliers and unobserved firm heterogeneity for estimates of the exporter productivity premium …