The impact of paid family leave on the timely vaccination of infants.

Time constraints parents face can affect whether infant children are vaccinated on time. Using the National Immunization Survey, we employ a synthetic control difference-in-difference estimation technique to establish a causal relationship arising from California's implementation of Paid Parental Leave Program as a natural experiment. We find California Paid Family Leave reduced late vaccinations by up to 5 percentage points or approximately 10% for children born to parents in California after the policy was implemented. Further, the policy had a stronger impact on families below the poverty line. Thus access to paid family leave can improve on-time immunization of infants.