In France we have a Cabin Crew License, and you need to pass a class II medical check every 2 years, If you don't pass it, you can't fly. It can be temporary or permanent, depending on the problem.
There are insurances for loss of license.
Here is a presentation of the Hospital where the medicals are held in Paris (it's in French)
Défense - Le CPEMPN de l'hôpital Percy
We need to have recurrent training every year on SEP, First Aid, Dangerous Goods, HF+CRM, Security and Aircraft Specialization(s) followed by a test. If you fail you cannot fly until you have passed it.