Qualified workers are eligible for old age and disability benefits.
Benefits are also available for the spouse and dependents of a retired or disabled worker.
When a worker dies, benefits can be collected by the surviving family who qualify. I want to retire, but then take a part-time job. I have virtually no money. I don't qualify for regular social security or disability benefits. I think my elderly father is eligible for SSI, but he is much too ill and confused to visit an office or complete an application.