Firm heterogeneity in sources of total factor productivity growth for Japanese manufacturing firms

We investigate firm heterogeneity in productivity sources across technology sectors for Japanese manufacturers. Firm heterogeneity in productivity sources conveys more information about firm-specific differences in productivity. In this regard, large firms are more productive, largely because they are more innovative, despite being slow to catch up during booms or operating at a less-than-efficient scale. We find that the beneficial impact of exports on productivity is most evident when firms become exporters, and intrafirm trade causes enough inefficiency to offset the salutary effects of trade after a certain threshold. Notably, firm heterogeneity in productivity varies considerably across the technology sectors.