What should I do if the company's personnel mistakes give the resigned employees an extra month's social security?

The overpaid provident fund can be returned through the system process. Legally speaking, the employee should not get insurance, but the company has the right to recover the unjust enrichment that belongs to the employee because of the company's mistakes. The specific way can be negotiated with the employees, or if the negotiation fails, the case should be won, but your company should consider the litigation cost and energy consumption. ?

Social security:

Social insurance refers to a social and economic system that provides income or compensation for people who lose their ability to work, are temporarily unemployed or suffer losses due to health reasons. The main items of social insurance include endowment insurance, medical insurance, unemployment insurance, industrial injury insurance and maternity insurance. The social insurance plan is organized by the government, forcing a certain group to use part of its income as social insurance tax (fee) to form a social insurance fund under certain conditions.