An investment plan in which participants buy shares in a common fund and receive an annuity that increases every time a participant dies, with the entire fund going to the final survivor or to those who survive after a specified time.

• 联合养老金制一种集资办法，所有的参加者共同使用一笔基金，每当一个参股者死后，剩下的人得到一份增加的份额，最后一个活着的人或过了一定时间依然活着的人获得剩下的所有金额