This article empirically examines married women's labor supply and chi
ld care expenditures. The article uses winter 1984-85 data from the Su
rvey of Income and Program Participation to estimate a fully structura
l econometric model of labor supply and paid care utilization, Estimat
ion results indicate that the cost of paid care has small negative eff
ects on labor supply but stronger negative effects on paid care utiliz
ation. Consequently, subsidy programs such as the Child and Dependent
Care Tax Credit appear to have few effects on married mothers' employm
ent.