Do Foreign Experts Increase the Productivity of Domestic Firms?
通过丹麦的工人-企业匹配数据和匹配双重差分方法，发现雇佣外国专家而非国内专家的企业生产率更高，表现为向高技能同事支付更高工资。
Abstract While most countries welcome (and some even subsidize) high‐skilled immigrants, there is very limited evidence of their importance for domestic firms. To guide our empirical analysis, we first set up a simple theoretical model to show how foreign experts can affect the productivity and wages of domestic firms. Using matched worker–firm data from Denmark and a matching difference‐in‐differences approach, we then find that firms that hire foreign experts instead of domestic experts become more productive, in the sense that they pay higher wages to high‐skilled co‐workers.