Labor dispute dismissed; unregistered collective agreement changes lack binding force until registration.

The Supreme Court dismissed the cassation appeal filed by an employee against a lower court's award of higher wages based on an unregistered collective agreement. The employee argued that internal wage reductions agreed upon by management and unions should apply, but the court held that such agreements only become legally binding upon registration. Consequently, the court ruled that the registered collective agreement, which provided for higher pay, remained the sole valid basis for compensation during the disputed period.