Most models of the allocation of imports over suppliers adopt a two-stage (separable) procedure in which a total imports function is estimated prior to the function allocating imports over suppliers. This procedure is tested for five countries' imports of manufactures and found wanting in four...

This paper studies the effect of firm entry deregulation on the returns to skill and education. We exploit a comprehensive episode of entry deregulation, unique in the industrialized world, as a quasi-natural experiment. Using matched employer–employee data for the universe of workers and...