Certain groups cannot rely upon Unfair Dismissal, this is done for reasons of practicality, for example:
1. Members of the armed forces, members of the police service, employees working for government departments where a national security certificate has been issued, share fishermen.
2. Employees who are working under illegal contracts.
The illegal part of the contract can be removed and the rest remain so that they can claim Unfair Dismissal, but only if they were unaware of the illegality and did not benefit from it. Not knowing the law in a certain situation is no excuse, the employee must have been unaware that a certain practice was actually going on.
