Social Security Disability Insurance (SSDI) is wage replacement income for individuals who have worked and paid FICA taxes and who now have a disability meeting Social Security disability rules. SSDI provides a variety of benefits to family members when a primary wage earner in the family becomes disabled or dies. SSDI is financed with Social Security taxes paid by workers, employers, and self-employed persons. SSDI benefits are payable to disabled workers, widows, widowers, and children or adults disabled since childhood who are otherwise eligible.