GERARDO G. SERMONA, EDIN G. CARIOLA, LOLITA G. BARTOLO, JESIL R. SERMONA, CHARLES CARIOLA, REMEDIOS G. GARSON, ANDERSON P. GARCE, EPIFANIA P. GARCE, JERRY MOHELLO, BENJIE MOHELLO, SUNNY L. ESTORCO, AIDA V. GARSON, JOSAN G. GARSON, JEREMIAS ESTACION, FEBIE C. ESTACION, JULITA C. PABORADA, CONRADO PABORADA, JUANITO L. GRAPA, NARDIO R. CAROLA, BOBOY F. GARIE, JAREY P. CAROLA, AILEEN P. GARIE, LETECIA P. GARIE, MERCY P. GARIE, CRISTITA P. MOHELLO, PATRING MORELLO, MARIVIC MOHELLO, EMILY M. FLORES, AILYN G. VILLERES, GLINI G. GARSON, JAMESON P. CAMEON, CRISPIN G. SARSUELO, MESALYN G. SARSUELO, AURELIA C. GRAPA, JOEVANIE PABORADA, GEROME G. DENIEGA, ANECITA M. TUANDA, ANA MARIE L. RAFAEL, JOSEFINA M. MABIT, JOCELYN C. ESTACION, JOSA GARSON, GEROM GARSON, RUFINA ESTACION, THELMA ELISTERIO, ENGRACIO C. MABIT, AND MERCY G. CAMEON/NATIONAL FEDERATION OF SUGAR WORKERS-FOOD AND GENERAL TRADES, PETITIONERS, VS. HACIENDA LUMBOY/MANUEL L. UY, RESPONDENTS