Social security pension not recoverable if awarded under new law without clear warning to employee.

The Supreme Court dismissed the cassation appeal against a social security office's order to repay an overpaid pension. The employee had continued working after receiving a pension that should have been suspended under a new law, but the awarding decision lacked a clear warning about this specific provision. The court held that because the decision was issued under the old legal regime and the new rule was not explicitly communicated, the payment was not considered 'unjustly obtained' under the relevant statute.