Human capital and wages in exporting firms
利用工人-企业匹配面板数据，发现出口对工资有微弱负效应，但出口强度与技能强度的交互项对工资有正向影响，即出口工资溢价仅出现在技能强度足够高的企业中。
This paper studies the link between the education level of workers, export performance and wages. We argue that firms may escape intense competition in international markets by using high skilled workers to differentiate their products. This story is consistent with our empirical results. Using a very rich matched worker-firm longitudinal dataset, we find that there is a weak negative direct effect of exporting on wages, but an interaction term between export intensity and skill intensity has a positive impact on wages. That is, we find an export wage premium, but only in firms where the skill intensity is sufficiently high