The burden of enterprise social security payment is heavy

Social security is linked to wages, and the proportions borne by units and individuals are generally: endowment insurance (20% for units and 8% for individuals), medical insurance (0/0% for units and 2% for individuals), unemployment insurance (0/0/%for units and 0.2% for individuals), maternity insurance (0.8% shall be borne entirely by units) and maternity insurance. Because the per capita income varies from place to place, the proportion of provinces and cities is also different.

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