This brief highlights low-income workers and the impact of ACA coverage expansions on this population. Low-income workers may not have access to jobs that provide full-time, full-year employment or jobs with comprehensive benefit packages, including health insurance. Medicaid plays an important role in providing health coverage for low-income workers, and coverage expansions implemented under the ACA have produced substantial coverage gains for low-income workers and a corresponding reduction in the uninsured. However, low-income workers in non-expansion states with incomes too high for Medicaid but too low for subsidies in the Marketplace do not have an affordable coverage option and will likely remain uninsured.