[Excerpt] This report presents information on two components of federal disability benefits, those provided through the Social Security Disability Insurance (SSDI) and the Supplemental Security Income (SSI) programs. The SSDI program is an insured program that provides benefits to individuals who have paid into the system and meet certain minimum work requirements. The SSI program, in contrast, is a means-tested program that does not have work or contribution requirements, but individuals must meet the asset and resource limitations. To receive disability benefits under either program, individuals must meet strict medical requirements.