The question is whether such sick days are allowed by the labor contract.
It also depends on whether it is an at-will or fixed-term contract. If it is an at-will contract, usually the employer may fire the employee for no reason or bad reason. And he can certainly fire the employee if the employee is sick a lot.
If it is a fixed-term contract, the employer probably cannot fire the employee that freely.
In any case, an employer can always fire an employee. THe question is that of damages.
It also depends on whether it is an at-will or fixed-term contract. If it is an at-will contract, usually the employer may fire the employee for no reason or bad reason. And he can certainly fire the employee if the employee is sick a lot.
If it is a fixed-term contract, the employer probably cannot fire the employee that freely.
In any case, an employer can always fire an employee. THe question is that of damages.