PIP: This study used data from a variety of sources to examine the influence of women's employment on fertility trends in postwar Britain. It was hypothesized that current work exerts a negative, decelerating influence on fertility while prospective employment exerts a positive, accelerating influence. National Survey of Health and Development data (1946 birth cohort) indicate that work intentions are associated with shorter subsequent birth intervals, net of relevant factors including interbirth working. The effect of short interval duration on work return is weaker in low-order intervals. It is argued that the fertility increases recorded in the 20 years following World War II may have resulted, in part, from increased female labor force participation. The pull of future work is shown to have been stronger during the 1950s and 1960s while that of current economic activity increased during the 1970s, resulting in an initial accelerating and later decelerating impact on birth rates. It is suggested that future research examine the extent to which individual labor force decisions are governed by an age of youngest child parameter. Other potential areas of investigation include specification in detail of factors contributing to the hypothesized balance of attractiveness between current and future economic activity and the elements of the economic activity/childbearing decision making process.