An insurance program for which you pay premiums while you're working, and which may later pay you a monthly amount based on your income while working, your age

An insurance program for which you pay premiums while you're working, and which may later pay you a monthly amount based on your income while working, your age when you start receiving it, and a few other things. Also, a way to reduce homelessness and poverty among (primarily) the elderly by providing them with money to live on rather than letting them die of exposure on someone's porch then paying to haul away the corpses. For those truly opposed to it imagine not only having to have the occasional dead body hauled away but then being charged for that haulage because hey, big government is bad and why should you have to pay for dead bodies being hauled away when they're not on your porch?