What is meant by the three categories of social security

The concept of social security one class, two classes and three grades varies from region to region. If you take the Shenzhen area as an example, Shenzhen enterprise workers' medical insurance is divided into three classes: basic medical one class, basic medical two classes and basic medical three classes, whose contributions, treatment and adaptability to the population are different.

Article 58 of the Social Insurance Law of the People's Republic of China (PRC) stipulates that an employer shall, within thirty days from the date of employment, apply for social insurance registration for its employees with the social insurance agency. If it fails to register for social insurance, the social insurance agency shall authorize the social insurance premiums it is required to pay. Individual entrepreneurs without employees who voluntarily participate in social insurance, part-time employees who do not participate in social insurance with their employers, and other flexibly employed persons shall apply for social insurance registration with the social insurance administration organization. The State establishes a nationally unified individual social security number. Individual social security numbers are citizens' identity numbers.