Legal basis: Article 8 of the Regulations on Work-related Injury Insurance stipulates that the rate of work-related injury insurance shall be determined according to the principle of fixed income based on expenditure and balance of payments. According to the degree of industrial injury risk in different industries, the state determines the differential rates in different industries, and determines a number of rate grades in each industry according to the use of industrial injury insurance premiums and the incidence of industrial injuries. Industry differential rates and intra-industry rates shall be formulated by the administrative department of social insurance of the State Council, and promulgated and implemented after being approved by the State Council. According to the use of work-related injury insurance premiums and the occurrence of work-related injuries by employers, agencies in various regions shall determine the unit payment rate according to the corresponding rate grades of their respective industries.