The Relationship between Hours of Work and Labor Force Participation in Four Models of Labor Supply Behavior
比较了四种劳动供给模型（Heckman、Cogan固定成本、Moffitt最低工时约束及广义Heckman）中工作时间与劳动参与的关系，估计结果支持弱化两者联系的假设，并指出Heckman模型高估了劳动供给弹性。
This article analyzes the relationship between hours of work and labor force participation in J. J. Heckman's model, J. F. Cogan's fixed-cost model, R. Moffitt's minimum hours constraint model, and a generalized version of Heckman's model. First, the parameter restrictions between the labor force participation and reduced-form hours-of-work equations are compared. The models are then estimated and the results support the weakening of the link between the labor force participation and hours-of-work decisions. One implication of the analysis is that Heckman's model overstates the standard labor supply elasticities because it confounds the direct effect on labor supply with the participation effect. Copyright 1993 by University of Chicago Press.