Is it legal for Jilin Railway to let employees pay medical insurance?

Legal. Jilin Railway employees have signed a written agreement or labor contract when they join the job, stipulating that they should pay the medical insurance fee, or they or their families had medical insurance before they joined the job, but for some reasons, they did not go through the relevant procedures in time, resulting in the need to pay the medical insurance fee. Therefore, it is legal for Jilin Railway to require employees to pay medical insurance fees.