Temporary Help Agencies and Occupational Mobility*
通过比较西班牙临时工中介机构工人与普通工人的工作晋升机会，发现中介工人在中等技能级别上降职概率更低，且高技能工人更可能获得永久合同。
Abstract This paper analyses the effects of Temporary Help Agencies (THA) on occupational mobility by performing an empirical comparison of the job‐to‐job upgrading chances of agency and regular (non‐agency) workers in Spain. We estimate a switching regression model to allow for self‐selection into agency work because of, for instance, more motivated workers being more likely to search for jobs through a THA. We find evidence in favour of the existence of self‐selection in all qualification groups considered. Concerning mobility, we find that agency workers in intermediate qualification levels are less likely to experience demotions than regular workers. THA increase the probability of high‐skilled workers achieving a permanent contract in Spain.