Legal analysis: after the company finds that it has overpaid its employees, it can ask them to return, and employees should also take the initiative to return the overpaid wages. If the employee does not return, it will cause unjust enrichment and need to be returned in accordance with the law. If employees don't pay back, it will lead to unjust enrichment. There is a creditor-debtor relationship between the beneficiary and the victim. The beneficiary shall return the benefits (original or price) obtained by him to the victim. The basic effect of the debt of unjust enrichment is the victim's claim for the return of unjust enrichment.
Legal basis: Article 122 of the Civil Law of People's Republic of China (PRC) stipulates that the person who has suffered losses has the right to demand the return of improper benefits because others have obtained improper benefits without legal basis.