Qualification certification is generally once a year.
The reason for qualification certification is that the original pension is paid by the unit where the retirees work, and the unit is familiar with the situation of employees, so there is generally no situation of taking the pension without authorization. Later, pensions were socialized, and social security agencies could not grasp the situation of each retiree in time. In order to avoid the pension being taken by the family members of the deceased, reduce the amount of social security funds and harm the interests of all insured persons, qualification certification was carried out.