Is there a fixed time for the survival certification of retirees every year?

Is there a fixed time for the survival certification of retirees every year? How to authenticate? What if I can't? "Explain that people who have problems with their ideas are generally enterprise personnel who are about to retire or flexible employees. I can feel the joy and excitement of their imminent retirement. I can also understand that they don't communicate with people and have no culture. They are worried about retirement and survival certification after retirement.

If there are laid-off workers in formal enterprises, central enterprises, state-owned enterprises, large private enterprises and units ... they don't have these problems. Because, the unit will tell them the retirement time, the unit will go through the retirement procedures, and the unit will tell the employees the survival certificate.

If you are a retired retiree, you have no unit management, and you retire in the social security center, you also know how to carry out the certification of retirees' survival.

At present, the survival certification of retirees has not been fully integrated. It walks on two legs. It is unit certification and social security certification. Central enterprises, state-owned enterprises and institutions have not been completely decoupled from their units after retirement, and there are also some benefits of their units. These retirees are certified by their units, not by the social security center.

Retirees certified by the social security center, even if the unit still exists, exist in name only and do not give any benefits to retirees. Retirees and flexible employees who completely rely on social security after the disappearance of their units must be certified once a year in social security.