The definition of "total disability" varies in degrees from one insurance group to another. It can mean only total disability in performing the work an individual has worked and is trained to do. Total disability can also refer to the inability to work in any capacity. The Social Security Administration has a strict definition of total disability. Like many insurance companies, their understanding of the term is based on an individual's ability to work. Someone who is totally disabled is one who cannot perform the work they did prior to the disability. He or she is not able to adjust to any other type of work. Furthermore, the disability is not short-term in duration. The Social Security Administration does not provide benefits for short-term health problems. Their Social Security Disability Insurance (SSDI) is available only to those for whom the disability is either long-term or results in death. Under both SSDI and Supplemental Security Income (SSI), a long-term disability is of a nature that it must last for more than a year.