How to tell the leader if he has a fever and asks for leave in the morning?

This situation can be explained politely by WeChat or telephone.

You can send a text message or email to inform the leader to ask for leave, or you can call the leader directly.

When notifying the leader, you should clearly state your name, position, when you started to get sick and when you expect to come back to work. If you have a doctor's recommendation letter or illness certificate, you can provide it to the leader together.

In the process of communication, be polite and considerate, apologize for the inconvenience caused by work, and thank the leaders for their understanding.