The vast majority of low-income parents today are working but still struggling to make ends meet: struggling to find and keep a toehold in a changing labor market, to keep up with their bills, to pay the spiraling costs of essentials like health care and housing, and to raise children with a chance of future success. These families have much in common with other American families as they seek to balance work and family life, yet parents and children in low-income families are more financially vulnerable than those in higher-income families.