Can enterprises still pay social security to co-insurance personnel?

Co-insured persons and units pay social insurance for them, not retain labor relations.

At that time, I did this to comfort your hearts and let you get laid off smoothly. I thought you were still related to the unit, but it has nothing to do with the unit.

Provident fund does not belong to the social insurance category, you should go to the provident fund center to ask. If the policy says that employees of state-owned enterprises do not belong to the category of replacement, it is also something that enterprises can do nothing about, but you can ask them to show you their certificates and see which unit issued them, and then ask the issuing authority.

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