When did social security come into effect?

According to Hua Tuo's inquiry. The social insurance system in China has been implemented since 1993. From 65438 to 0993, China tried out the old-age insurance system in some state-owned enterprises, and began to pay the old-age insurance premiums jointly by units and individuals, and began to implement the social security system. Social security includes endowment insurance, medical insurance, industrial injury insurance, unemployment insurance and maternity insurance. 1984, China began to explore the reform of the original old-age insurance system. 1997, a basic old-age insurance system was established (hereinafter referred to as the unified account old-age insurance system). The goal of the system is only to provide basic living security for the insured, and the wage replacement rate of pension will be gradually reduced from nearly 100% before the reform to about 60%. In terms of ownership, the system combines social pooling with individual accounts, which embodies the combination of fairness and efficiency. This system is shared by enterprises and employees. The system implements a financial system that combines pay-as-you-go and accumulation. The payment of basic old-age insurance consists of basic pension and personal account pension, and the payment condition is that the individual payment period is accumulated to 15 years.