Supreme Court dismissed appeal; employer's unilateral revocation of coal allowance for retirees is invalid after long-term collective agreement application.

The Supreme Court dismissed the appellant's appeal regarding the employer's attempt to revoke a coal allowance for retired employees. Although the collective agreement had expired and the founding authority changed, the employer had applied the agreement's terms for over a year, creating a factual situation equivalent to continued validity. The court ruled that unilaterally withdrawing this benefit after such a period was an inappropriate method of deprivation. Consequently, the employee was entitled to the financial equivalent for the period covered by the previous court decision.