What is social security? What are the main insurances? How to pay? How long will it take to be useful? Please, great gods.

Social insurance premiums are paid by units and employees in proportion. Payment of social insurance premium = payment base × payment ratio. Pension insurance payment ratio: 20% for the unit (all included in the overall plan) and 8% for the individual (all included in the personal account); Unemployment insurance payment ratio: unit 1.5%, individual 0.5%; Medical insurance payment ratio: unit 10% (3% of which is included in personal account), and personal 2%+3 yuan industrial injury insurance determines its industrial injury rate according to the industry scope of the unit; Maternity insurance payment ratio: 0.8% for the unit, and no payment for the individual. Payment base of social insurance premium: 1. If the average monthly wage of a worker is lower than the average monthly wage of a worker at his place of work, the payment base shall be the average monthly wage of the worker at his place of work; 2. If the average monthly wage of workers is equal to or higher than the average monthly wage of workers in their workplace, the average monthly wage of workers shall be taken as the payment base, but the maximum is three times the average monthly wage of workers in their workplace.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.