Can social security reduce the payment base?

Can social security be reduced? Payment base, because the social security bureau will involve the payment base of the unit, and it must match the salary of the staff.

1. Social security includes pension, medical care, work injury, unemployment and maternity insurance.

Second, social insurance is a kind of insurance required by the state. The state develops social insurance undertakings, establishes a social insurance system and sets up a social insurance fund, with the aim of enabling workers to get help and enjoy insurance benefits in old age, illness, work injury, unemployment and childbirth. China's "Labor Law" and "Social Insurance Law" clearly stipulate that it is the legal obligation of the employer to pay social insurance for workers, which is obviously compulsory by the state, and the employer shall not refuse to undertake this legal obligation under any excuse or reason.