is not prohibited by statute is a legally valid reason. As applied to this case, NET does not state issues of performance in their decisions to place Mr. Cronan on disability, effectively releasing him from employment. Nor does NET state issues of performance in the rehiring of Mr. Cronan, or in his placement in any position.
             The concept of Wrongful Discharge is to protect classes from illegal discharge if based on categorization in one of the protected classes:
             ...