The Social Security Administration administers two programs that provide benefits based on disability: the Social Security disability insurance program and the Supplemental Security Income program. Social Security disability law consists of the rules used to decide who will qualify for Social Security Disability Insurance and Supplemental Security Income benefits, and how much money they will receive. The rules can be found in the Social Security Act as it appears in the published regulations and rulings of the Social Security Administration. To receive SSDI, the applicant must also be "disabled". The Social Security administration considers people to be disabled if they cannot work in their field or adjust to another field of employment, due to a severe medical impairment. An applicant may qualify based on a single impairment, or a combination. Either way, the inability to work must be complete, and long-term.