This paper examines how immigration affects native wages by exploiting an unexpected episode of immigrant influx. The episode happened in Hong Kong, when its government unexpectedly relaxed the restriction on immigration from mainland China in 1993, resulting in a seven-fold increase in the net...

A firm\'s export status may improve its capacity of introducing product innovations. We explore this idea using very rich firm-level data on Italian A firm\'s export status may improve its capacity of introducing product innovations. We explore this idea using very rich firm-level data on...

Empirical evidence suggests that sectoral export growth decreases exporters\' survival probability, whereas non{exporters are unaffected. Models with firm heterogeneity in total factor productivity predict the opposite. To solve this puzzle, we develop a two-factor framework where firms differ...