The present study examined the need of training and development of entry level employed women from the perspective of organizational socialization. The lower job performance of female employees than males is more related to adaptation or sense-making problems rather than job knowledge and skills. therefore, training and development programs for female newcomers need to be designed to facilitate their adaptations in the new setting. In order to facilitate learning processes of female newcomers, the role of insiders is critical. they provide lots of informations and feedback for newcomers to interpret unfamiliar organizational cues. In particular, managerial styles of immediate supervisors tend to have strong impacts on the newcomer's performance. challenging first job and early job feedback provided by supervisor would influence the later job performance of female newcomers. Finally, the effect of women-only training program as compared to men & women combined program was discussed.