Pay social security; Generally, it is aimed at some problems left over from history; Insure (repay); Men under 60. Female: under 50 years old, social security coverage 15 years. No need to return; Social security is cumulative. At the cumulative expiration of 15 years. Those who meet the retirement requirements do not need to pay back; If it is insured in the name of an individual, if it is missed, it can only be paid back, and five risks can be paid. If the unit does not declare (does not open an account), it can only pay the pension. If you want to pay it back after a period of time, you can find an agent to pay it back. If the payer (excluding individuals and freelancers) fails to pay the employee's old-age insurance premium, he shall bring the following materials to the social security agency to handle the case payment of the basic old-age insurance premium:

1, employee file and endowment insurance manual;

2. Application Form for Paying Basic Endowment Insurance;

3. Labor contract, salary payment list, employee's monthly tax payment certificate, etc. ;

4. Other relevant materials.

Legal basis: Article 58 of the Social Insurance Law of People's Republic of China (PRC) stipulates that the employer shall apply to the social insurance agency for social insurance registration for employees within 30 days from the date of employment. If the social insurance has not been registered, the social insurance agency shall verify the social insurance premium it should pay. Employees-free individual industrial and commercial households who voluntarily participate in social insurance, part-time employees who do not participate in social insurance in the employing unit and other flexible employees shall apply to the social insurance agency for social insurance registration. The state establishes a national unified personal social security number. Personal social security number is a citizen's identity number.