Job Vacancies and Immigration: Evidence from the Mariel Supply Shock
利用Help-Wanted指数和招聘广告文本，研究了马里埃尔移民冲击如何影响迈阿密的职位空缺数量，发现初期空缺大幅下降后恢复，且低技能空缺显著减少，贝弗里奇曲线内移表明劳动力市场效率提升。
We use the Conference Board’s Help-Wanted Index (HWI) to document how immigrant supply shocks change the number of job vacancies. Our analysis reveals a sizable drop in Miami’s HWI relative to comparable cities in the first few years after the Mariel shock, followed by recovery afterward. An analysis of the text of the help-wanted ads also documents a significant decline in the relative number of low-skill vacancies advertised in the Miami Herald. Miami’s Beveridge curve shifted inward by the mid-1980s, suggesting a more efficient local labor market, in contrast to the outward nationwide shift coincident with the 1981–82 recession.