Evidence on the Volunteer Labor Supply of Married Women

I estimate a significant, positive wage elasticity of married women's volunteer labor supply from 1975 to 1976 U.S. time diary data. Increases in the number of children in the household significantly raise participation rates but reduce volunteer hours. I find weak support for a sequential time allocation model of volunteering where the wage as the opportunity cost of time has only a second-order effect on volunteer hours. Increased hours of market work for married women decrease their volunteering. Cash and time donations are complements at the volunteer participation level but substitutes in terms of married women's volunteer hours.