The effect of child-bearing and family size on women's work is examined for two rural areas in Thailand based on a combination of quantitative data collected in a survey and qualitative data yielded by focus group discussions. Although reproduction does not prevent rural Thai women from working, it does have some impact on women's work by temporarily interrupting economic activity following the birth of a child and by young children interfering with work after economic activity is resumed. Given that these periods of interruption and interference cumulate with each birth, it can also be said that family size has impact.