Worker Selection, Hiring, and Vacancies
将工人筛选引入多工人企业的随机匹配模型，解释职位空缺产出率随就业增长和工人流动率上升、随企业规模下降的现象，并比较筛选模型与定向搜索模型的政策含义。
This paper incorporates worker selection into a random matching model with multi-worker firms. Unlike the standard Diamond-Mortensen-Pissarides (DMP) model, the extended model is compatible with cross-sectional behavior of vacancy yields, which rise with employment growth and worker turnover, but fall with establishment size. Using calibrated versions of the standard and worker selection models, I show that accounting for these patterns has quantitatively important policy implications. I also compare the worker selection and the directed search models. While both models account for these patterns equally well, they differ with regard to labor market policy.