What about the social security of employees who leave their jobs and pay more?

Legal analysis: it can be returned. If the enterprise retires after paying the fees or there is no change in personnel transfer, it can apply for a tax refund at the local tax department: the local tax department applies for a tax refund with the resignation certificate and payment bill of the resigned employee, and the payment base is re-determined by the local tax department, and the entity account is deleted in the endowment insurance agency that the enterprise participates in that month, and the refund application is made at the enterprise office of the Municipal Social Pension and Industrial Injury Insurance Administration (the refund materials must include the certificate of incorrect payment base, payment bill and refund issued by the local tax), and the correct amount is declared to the local tax after the above procedures are completed.

Legal basis: Article 50 of People's Republic of China (PRC) Labor Contract Law. The employing unit shall issue a certificate of dissolution or termination of the labor contract at the time of dissolution or termination, and go through the formalities for the transfer of files and social insurance relations for employees within 15 days. Laborers shall handle the work handover according to the agreement of both parties. If the employing unit should pay economic compensation to the workers in accordance with the relevant provisions of this law, it should pay it when the work handover is completed. The employing unit shall keep the text of the dissolved or terminated labor contract for at least two years for future reference.