Supreme Court voids social security law application due to retroactive effect before official publication date.

The Supreme Court voided lower court rulings that denied a pension increase based on a new social security law. The applicant argued the law should apply retroactively to periods before July 1, 1977, while the state contended the new statute superseded old rules immediately upon entry into force. The court ruled that applying the new law retroactively violated the principle of legal certainty because the law entered into force before its official publication, meaning citizens could not have known of the change.