Human health care and selection effects. Understanding labor supply in the market for nursing1
研究了护理劳动力市场中工资上涨如何影响求职者的平均生产率与职业水平，发现工资提高不一定提升平均生产率，甚至可能降低，对解决护理短缺的政策有启示。
The aim of this paper is to study (adverse) selection in a labor supply model where potential applicants are characterized by different vocational levels and skills. We look at how the composition of the pool of active workers changes as the wage rate increases. Contrary to what would expect, average productivity does not necessarily increase monotonically in the wage rate. We identify conditions in which a wage increase reduces the average productivity and/or average vocation of active workers. Our results help understand the potential impact of wage increases as a policy designed to resolving shortages in the labor market for nurses.