How Restricted is the Job Mobility of Skilled Temporary Work Visa Holders?
利用全国大学毕业生调查，研究了美国临时签证持有技术工人的职业流动性，发现其自愿跳槽率与本地人相似，但在获得永久居留权时显著上升，表明申请期间流动性降低约20%。
Abstract Using the National Survey of College Graduates, we investigate the job mobility of skilled workers holding U.S. temporary visas. Such workers either have legal restrictions on their ability to change employers or may be reluctant to leave an employer who has sponsored them for permanent residence. We find that the voluntary job‐changing rate is similar for temporary work visa holders and natives with similar characteristics, but that it spikes when temporary work visa holders obtain permanent residence. The spike magnitude implies mobility is reduced during the application period by about 20 percent, alleviating concerns that employers exercise strong monopsony power.