Why is the social security base lower than the salary?

According to the different types of social insurance, the payment base is also different. 1. The payment base of endowment insurance for urban employees is based on my average monthly salary, but the salary of employees is lower than 60% of the average social salary; Then take 60% of the average social wage as the payment base, and when the employee's wage is higher than 300% of the average social wage, take 300% of the average social wage as the payment base; 2, flexible employment personnel, because it is impossible to verify their wages, according to the social average wage between 60% and 300%, the social security department set up different grades of payment base, by the insured to choose their own grades to pay; 3, urban and rural residents pension insurance payment grade, from 100 to more than 2000 yuan, the insured can freely choose the base of payment.

Legal objectivity:

Article 12 of the Social Insurance Law of People's Republic of China (PRC), the employing unit shall pay the basic old-age insurance premium in proportion to the total wages of its employees as stipulated by the state, and record it in the basic old-age insurance pooling fund. Article 23 of the Social Insurance Law of People's Republic of China (PRC), employees shall participate in the basic medical insurance for employees, and the employer and employees shall jointly pay the basic medical insurance premium according to the provisions of the state. Article 33 of the Social Insurance Law of People's Republic of China (PRC), employees shall participate in work-related injury insurance, and the employer shall pay the work-related injury insurance premium, while employees shall not pay the work-related injury insurance premium. Article 53 of the Social Insurance Law of People's Republic of China (PRC), employees shall participate in maternity insurance, and the employer shall pay maternity insurance premiums in accordance with state regulations, while employees shall not pay maternity insurance premiums. Article 6 Urban enterprises and institutions shall pay unemployment insurance premiums at 2% of the total wages. Employees of urban enterprises and institutions pay unemployment insurance premiums according to one percent of their wages.