Is it illegal to pay social security in Guangzhou?

Is it illegal to pay social security? The answers are Labor Law, Social Insurance Law and so on. It is clear that employers and their employees must participate in social insurance. Although the Social Insurance Law forces employers to pay social security fees for employees, which is a mandatory obligation of employers, it does not prohibit employers from paying social security fees for employees who are not in their own units. This behavior does not harm the interests of the state and the third party. Workers and enterprises create conditions that meet the requirements of paying social insurance premiums and do not harm the interests of others. Secondly, it is reasonable for employers to pay social security fees for employees who are not in their own units, which is conducive to realizing the social security rights and interests of some employees. Insured people can't participate in insurance in their workplace due to household registration restrictions, and their participation as individuals is also restricted by many conditions. Joining affiliated units is the only way to realize social security rights and interests. If the law prohibits the unit from participating in insurance for non-unit employees, this only way will be blocked, and the insured will not be able to participate in insurance, and their social security rights and interests will not be realized, which is not conducive to social harmony and stability.