[BlackDog]

Given that I think I better understand the situation to which the OP refers, I think there are two other considerations. One is that an employer has a duty to ALL of his employees, not just one individual. If one individual jeopardizes the harmony of the workplace, then yes, they have a right to fire him. Secondly, if an employee creates a situation where the employer may be adversely effected by loss of customers, then there too the employer has the right to sever the relationship with that employee.