CELERNA CALAYAG, AMELIA ORFIANO, MARILYN HIBE, ERNESTO CLARIN, NARCISO UNGSOD, BONIFACIO TORIDA, BOB ILLUT, EVELYN BAJET, ELORDE ILUSTRISIMO, ENRICO DETIQUEZ, JAIME CASTRO, JOSEFINA DAMALERIO, CARIDAD LERUM, NOVA FAJARDO, DANILO DELA CRUZ, ALBERTO FAUSTO, ESTELLA GELLI, KATHERINE DELA CRUZ, HEIDEE LAUREL, NISSAN LAUREL, VICENTE CHUA, ARMELA MARTIN, MELINDA BATIANCILA, GEMMA REBAYA, PRECIOUS ILUSTRISIMO, SOSAN LISBO, MARLON TRABALLO, NIMFA DANNUG, MARILYN LABORTE, SONIA MANZANILLA, LOURDES PARBA, ADELINA ALIPIN, JONATHAN BASA, MARIA LIZA CABARQUIL, RICHARD FAJICULAY, RICARDO HILARIO AND JONATHAN TESSLER, PETITIONERS, VS. SULPICIO LINES, INC. (NOW KNOWN AS PHILIPPINE SPAN ASIA CARRIER CORPORATION, DOING BUSINESS UNDER THE NAME AND STYLE OF "SPAN ASIA CARRIER") [FORMERLY: SULPICIO LINES, INC.], RESPONDENT