Collective agreement did not replace employer's individual decision on seniority calculation under Polish Labor Law.

The Supreme Court dismissed the cassation appeal against a lower court ruling that awarded seniority bonuses to a former driver. The plaintiff argued that a collective agreement should have replaced his individual seniority record, but the court found the employer's prior decision to include his pre-employment period valid. The court held that the collective agreement only replaced statutory conditions, not the specific terms voluntarily established by the employer and accepted by the employee.