The old-age insurance in the extended data social security must be paid by 15, and you can receive your pension monthly after retirement, because the old-age insurance adopts the principle of "pay more and get more". After 15, how much you receive each month is subject to the individual's contribution level. What is social security and what are the benefits of buying social security? Simply put, social security is a kind of national welfare, including medical insurance, old-age insurance, maternity insurance, industrial injury insurance and unemployment insurance. 1, medical insurance: medical expenses can be reimbursed when you go to the clinic or stay in hospital when you are sick. People who eat whole grains will inevitably have headaches and brain fever. When they are sick, they can see a doctor, whether it is out-patient or in hospital. The medical insurance in social security can reimburse us some expenses. Medical insurance is also the type of social security that we usually contact the most and can directly bring us benefits. 2. Old-age insurance: you can receive a pension after retirement. The accumulated payment of old-age insurance is 15 years. After retirement, you can receive a monthly pension to ensure that you can't work when you are old, have children to rely on, and have basic living security. 3. Maternity insurance: reimbursing the medical expenses of giving birth to children and subsidizing some economic losses. Maternity insurance is used to reimburse medical expenses from the beginning of pregnancy to the end of delivery, including birth check-up fees and delivery fees. In addition, there is a maternity allowance to compensate for the loss that may affect normal work during pregnancy. "Paid maternity leave" is actually maternity allowance. 4. Work-related injury insurance: compensation can be obtained for unfortunate work-related injuries or occupational diseases. If you suffer accidental injuries or occupational diseases at work, you may temporarily or permanently lose your ability to work or even lose people. Industrial injury insurance can give us or our families some compensation. 5. Unemployment insurance: If you are passively unemployed, you can get a sum of money. Unfortunately, they are listed in the company's layoff list, or after the company goes bankrupt and is forced to lose their jobs, they can apply for unemployment benefits in case they have no money to eat-those who just want to take a break and leave voluntarily are not included.