REY TORRECAMPO, JOVITA V. CALMA, WINTHROP MARK N. BARBA AND LEA TAPNIO, PETITIONERS, VS. NATIONAL LABOR RELATIONS COMMISSION (NLRC), MATSUSHITA ELECTRONIC PHILS. CORP., SEIICHI FUKAMI, IROKAZU UMEDA, BARTOLOME SARANGGAYA, JAIME TIONGSON AND SINICHI JOSONE, RESPONDENTS