The study estimates the effect of fertility on female labor force participation in a cross-country panel data set using abortion legislation as an instrument for fertility. The study found a large negative effect of the fertility rate on female labor force participation. The direct effect was concentrated among those aged 20-39; cohort participation was persistent over time giving an effect among older women. The study presents a simulation model of the effect of fertility reduction on income per capita, taking into account changes in female labor force participation as well as population numbers and age structure