Dear _ Hello, there are two main reasons. One is that everyone's medical insurance payment base is different, and the other is that employees are different in age. 1, the medical insurance refund is related to the payment base. The base of medical insurance payment is generally the average salary of employees in the previous year. If the salary is high and the payment base is high, it means that the medical insurance card will return more money every month. Each region has set the upper and lower limits of the medical insurance payment base. No matter the salary of employees, they can't exceed this standard, but it doesn't rule out that companies pay employees according to the minimum standard. 2. Medical insurance refund is related to age. Usually, the return of the elderly is much higher than that of the young, and the return of retired employees is much higher than that of active employees.