What is a social security file?

Archives formed by handling social security business. Social security files are formed by social insurance agencies in the process of handling social insurance services such as pension, medical care, unemployment, work injury and maternity. Generally, it includes the registration form and relevant audit materials filled in by the insured unit when handling insurance registration, change registration and cancellation registration, and the registration form and relevant audit materials filled in by the insured unit when handling registration procedures such as change of social insurance relationship and change of basic information.