Dismissed appeal where dismissal from vice-principal role deemed unilateral unfavorable work condition change requiring union consent.

The Supreme Court dismissed the plaintiff's cassation appeal against a second-instance court ruling that rejected her request to restore her position as vice-principal. The plaintiff argued that her dismissal violated labor protection norms because it occurred at year-end rather than during the school year, while the school contended the decision was rational given staffing needs. The court held that dismissing a teacher from a vice-principal role constitutes a unilateral unfavorable change to work conditions under the Trade Union Act, mandating union approval regardless of the timing or organizational pretext.