(1) If the employer demands of the employee some unrelated service which has not been agreed upon between the parties, the employee may rescind the contract and refuse to perform his services in the future.
(2) If, where the specified services which have been agreed upon between the employer and employee require special training, experience, and knowledge on the part of the employee, the employer may rescind the contract for services for the future if the employee fails to possess the above qualifications agreed upon.