Disability income or disability insurance is money supplied by either a private or public source. It is intended to partially replace wages lost to an inability to work. There are several forms of disability income. There are national programs. In the United Kingdom, disability income is incorporated into the National Insurance. In Canada, disability income is part of a social network system including the Canada Pension Plan. In the United States, the federal agency covering disability income is the Social Security. This organization provides 2 basic types of disability income. These are the Social Security Disability Income and the Supplemental Security Income. In addition 5 states and 1 commonwealth have their own form of disability income. These are all public forms of disability income. There are also private sources who provide this type of insurance. The employer can decide to include group disability insurance as part of an overall policy. An individual can also pay the premiums to receive disability income from an insurance policy. The types, premiums, rates, and benefits will vary according to the specific company.