Compared to unpaid leave, paid family leave may better help working parents balance the competing needs of job and family early in a child's life, among other advantages. Yet the United States remains one of only two countries in the world without a statutory national paid maternity leave policy, and one of the only high-income countries that doesn't provide access to paid paternity leave for new fathers at the federal level. In theory, Maya Rossin-Slater and Jenna Stearns write, paid leave can benefit families in two ways: by changing the amount of income available in the household (and the amount of resources available for the child), and by increasing the amount of time parents spend with their children. Despite the lack of paid leave at the federal level, several US states have their own paid family leave programs, all of which provide partial wage replacement during leave to care for a newborn or newly adopted child, and aim to cover a broad segment of the workforce through minimal eligibility requirements. Rossin-Slater and Stearns review research about the effects of these state-level programs, as well as paid leave programs in other countries. The authors find that paid family leave has a number of benefits. For one, compared to unpaid leave, paid family leave increases leave-taking rates and leave duration, especially among disadvantaged parents. Paid leave programs that range from a few months to up to a year in length also appear to improve both infants' health and mothers' outcomes in the job market. At the same time, the research finds that existing paid leave programs have minimal impacts on businesses, suggesting that these programs confer benefits to workers and their families at little to no cost to their employers. Finally, because rising economic inequality in the United States is in part driven by disparities in early childhood, the authors argue that paid family leave may be one way to level the playing field for children from all backgrounds and help improve intergenerational mobility.