The Social Insurance Law of People's Republic of China (PRC) is an important law that plays a supporting role in the socialist legal system with Chinese characteristics, and it is a law that focuses on safeguarding and improving people's livelihood. The Social Insurance Law stipulates that units must go through the formalities of paying social insurance premiums for employees and pay social insurance premiums monthly. After employees enter the unit, they should hand in their unemployment employment registration certificate to the unit, so as to facilitate the unit to handle the social security fee payment procedures. The unemployment employment registration certificate shall be kept by the company. When an employee leaves the company, the company should record the employee's working hours in the company on the Unemployment Employment Registration Certificate, and return the employee with the official seal to facilitate the employee's re-employment.