Supreme Court dismissed cassation; mining leave contract prevails over later unfavorable mining law.

The Supreme Court dismissed the appellant's cassation appeal against a labor court ruling that granted mining leave to two employees. The court found that the employer validly granted the leave based on a specific regulation, creating a binding employment contract more favorable to the workers than the new mining law. Consequently, the employer could not unilaterally revoke the leave or force early retirement solely because the new law offered less benefit, as the principle of protecting the employee's contractual rights under labor law prevails.