Supreme Court dismissed extraordinary review, ruling backdated wage adjustments violate equal treatment principles.

The Supreme Court dismissed the extraordinary review filed by the Ministry of Labor against a lower court's order for backdated wage equalization. The plaintiffs argued that a collective agreement clause granting future salary increases to all employees violated their rights as former workers. The court held that while the payment was not a direct backdated raise, it was strictly tied to work performed in the specific period, making its denial to former employees a violation of equal treatment and wage principles.