This study investigates the organizational socialization and organizational citizenship behavior among Filipino workers in multinational companies (multinational company) and Filipino-owned companies (Filipino-owned company), using the mixed method research design. The Phase 1 surveyed Filipino employees (N=500) between 18 to 59 years of age and was analyzed using t-test. The findings showed no significant differences on scores both on organizational socialization and organizational citizenship behavior among the multinational company employees and Filipino-owned company employees. Moreover, ten employees, five of which represented each type of business organizations, participated in the focus group discussions during the Phase 2 of the study. Such discussions were intended to explore more on the organizational socialization behaviors and the extra - role behaviors the participants had exhibited. The study also discussed the implications of the results.