This paper examines the relationship between family investments in human capital and the earnings of women, using data from the 1967 National Longitudinal Survey of Work Experience (NLS). It explores how time allocation and investments in human capital influence women's market earnings, considering factors such as marital status, number of children, and work experience. The study develops a human-capital earnings function to model how earnings evolve over the life cycle, incorporating both schooling and job experience. The analysis reveals that women's earnings are influenced by their investment in human capital, with higher investment leading to higher earnings. The study also highlights the impact of discontinuous work experience on earnings, noting that women with less continuous work experience tend to have lower earnings. The paper compares the earnings profiles of women with those of men and single women, finding that women's earnings profiles are often double-peaked, reflecting periods of higher and lower investment. The study also examines the effects of family size, formal training, mobility, and health on earnings, finding that these factors significantly influence women's earnings. The paper concludes that the human-capital earnings function is a useful tool for understanding the determinants of women's earnings and highlights the importance of family and work experiences in shaping these earnings. The findings suggest that women's earnings are influenced by a complex interplay of factors, including their investment in human capital, work experience, and family circumstances.This paper examines the relationship between family investments in human capital and the earnings of women, using data from the 1967 National Longitudinal Survey of Work Experience (NLS). It explores how time allocation and investments in human capital influence women's market earnings, considering factors such as marital status, number of children, and work experience. The study develops a human-capital earnings function to model how earnings evolve over the life cycle, incorporating both schooling and job experience. The analysis reveals that women's earnings are influenced by their investment in human capital, with higher investment leading to higher earnings. The study also highlights the impact of discontinuous work experience on earnings, noting that women with less continuous work experience tend to have lower earnings. The paper compares the earnings profiles of women with those of men and single women, finding that women's earnings profiles are often double-peaked, reflecting periods of higher and lower investment. The study also examines the effects of family size, formal training, mobility, and health on earnings, finding that these factors significantly influence women's earnings. The paper concludes that the human-capital earnings function is a useful tool for understanding the determinants of women's earnings and highlights the importance of family and work experiences in shaping these earnings. The findings suggest that women's earnings are influenced by a complex interplay of factors, including their investment in human capital, work experience, and family circumstances.