Polish Supreme Court dismissed appeal, ruling collective agreement interpretations depend on parties' own assessment.

The Supreme Court dismissed the cassation appeal against a labor court judgment awarding a 20% shift allowance to a miner. The plaintiff argued that a joint interpretation of the collective agreement was invalid, while the defendant contended the allowance applied based on the text alone. The court held that the right to jointly interpret collective agreements is a freedom of collective bargaining subject to the parties' own evaluation, not requiring objective ambiguity.