In 1956, the Social Security Act was amended to include disability coverage. Currently, the Social Security Administration runs two disability programs. The first is the regular disability program and the second is the Supplemental Security Income (SSI) program for low and no income recipients. SSI is funded by the US Treasury, not by the FICA income tax that funds regular Social Security disability. For a person to receive any kind of Social Security Disability Income from either program, they must submit a lengthy application that includes many personal documents, such as medical records, payroll records and insurance records. They also must be able to prove their disability, and be able to prove the lasting impact of the disability. If an applicant becomes eligible, then depending on the program, certain personal information is used to calculate their monthly benefit. Additionally, SSI allows for beneficiaries to continue receiving benefits from other programs, and both programs allow for people to return to work and still get a Social Security disability income, although they may have reductions in payment or have to pay taxes after a certain income amount is passed.