Should social security be paid according to the previous base or the current base?

Dear you, legal analysis: pay back according to the current base. Social security can generally be paid for nearly three months, but as long as the labor relationship can be proved, there is no limit on the number of years, no matter how long. To pay back social security, employees' files, old-age insurance manuals, application forms for paying basic old-age insurance premiums, labor contracts, salary payment details, etc. should be carried with them until the social security agency handles the payment.