The balance of medical insurance card pays endowment insurance.

First, the employee's social security card generally only has the employee's medical insurance card, so the balance in the medical insurance card is not the money paid by the company with personal social security, but the amount returned to the individual by medical insurance in proportion. Individual contributions are all included in individual accounts, and unit contributions are included in individual accounts according to a certain proportion, and most of them are included in overall accounts. The insurance premium in the overall account is invisible to individuals, and individuals can only use the overall account for reimbursement.

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