Lack of health insurance can affect the health and productivity of workers as well as the health of workers families, especially for low-income families, who are more likely to have members in poor health. We show that about half of children in low-income families do not have access to employer-sponsored insurance (ESI). Among the families without access to ESI, public insurance fills some gaps among children, but parents remain uninsured at high rates. For these families, children are twice as likelyand parents are nearly three times as likelyto be uninsured compared to families with an ESI offer.