attributed to changes in the demographic composition of mothers. We next exploit county-level variation in the timing of these …

cutoff due date. As an additional source of exogenous variation, we use information on non-working mothers, who are not …

trimester of pregnancy. The negative impact on cognitive skills and development is concentrated on lower-income children and …

cutoff due date. As an additional source of exogenous variation, we use information on non-working mothers, who are not …

cutoff due date. As an additional source of exogenous variation, we use information on non-working mothers, who are not …

caused by work in the third trimester of pregnancy. We find no evidence for significant effects of this extension on children …. We conclude that, for workers without problems in pregnancy, mandatory maternity leave should not start prior to the 35th …