When did Shenyang start to pay social security? Do you have any relevant documents?

On September 1 2004, the Regulations on the Collection and Payment of Social Insurance Fees in Shenyang came into effect.

In order to strengthen and standardize the collection and payment of social insurance premiums, ensure the payment of social insurance premiums, and safeguard the legitimate rights and interests of employees, retirees and unemployed people, these Regulations are formulated according to the Provisional Regulations on the Collection and Payment of Social Insurance Fees of the State Council and the actual situation of this Municipality.