Refusal to teach religion in a legally designated new workplace justifies termination for employee fault under Labor Code.

The Supreme Court dismissed the cassation appeal filed by a teacher seeking reinstatement after being terminated for refusing to teach religion in a newly assigned location. The court held that the employer's decision to move the religious instruction post was lawful, and the teacher's refusal constituted a serious breach of duties warranting immediate termination without notice. Although the lower courts erred in dismissing the formal notice requirement, the Supreme Court ruled that the substantive fault justified the dismissal and awarded damages instead of reinstatement.