Is a Policy of Free Movement of Workers Sustainable?
研究工人自由流动政策的成本与收益，发现当工人更缺乏耐心、风险厌恶程度更低、生产技术递减收益更强以及国家间贸易份额较大时，该政策更难以被采纳。
Abstract In this paper, we study the costs and benefits of the adoption of a policy of free movement of workers. For countries to agree on uncontrolled movements of workers, short‐run costs must be outweighed by the long‐term benefits of better labor‐market flexibility and income smoothing. We show that such a policy is less likely to be adopted when workers are more impatient and less risk‐averse, when production technologies display stronger decreasing returns, and when countries trade a significant share of their products.