Return and Dynamics: The Path of Labor Migration when Workers Differ in Their Skills and Information Is Asymmetric
研究了信息不对称下劳动力迁移理论，发现回归迁移源于信息对称恢复，低技能工人不再与高技能工人混合而返回；当职业中技能层级超过两级时，迁移呈波浪式，每波中低技能者返回，且迁移者平均技能水平随波次上升。
"An implementation of the theory of labor migration under asymmetric information shows that return migration arises from the reinstatement of informational symmetry which induces low-skill workers, who are no longer pooled with high-skill workers, to return. When workers in an occupation constitute more than two skill levels, say four (without loss of generality), the following patterns emerge: Migration is sequential, that is, it proceeds in waves. Each wave breaks into workers who return and workers who stay; within waves the returning migrants are the low-skill workers. The average skill level of migrants is rising in the order of their wave."