We analyze the relationships among infant feeding, infant health, and
the labor supply of mothers using detailed, longitudinal data from the
Philippines. We find little evidence that maternal labor supply has a
direct, causal effect on child health after accounting for the endoge
neity of the mother's labor supply. Consistent with the predictions of
economic theory, mothers with higher wage offers are more likely to w
ork, less likely to breastfeed, and more likely to use infant formula.
Mothers with higher wages have healthier children, while mothers faci
ng higher food prices have less healthy children.