Why does social security status show migrant workers?

Personal identity is worker identity. Social security identity indicates the identity of migrant workers, because personal identity is the identity of workers. Signing a tripartite agreement with talents after graduation does not necessarily mean that they are cadres, but may be workers. The tripartite agreement includes the identities of cadres and workers, and there is no necessary connection between them. This migrant worker's status is only for unemployment insurance, and it has no effect on the basic medical insurance for employees.