For the reinforcement of international competitiveness of domestic companies amid a rapid globalization of the world economy, the government has provided young people who seek overseas employment with training programs for capabilities required by employers, which helps them to work abroad and to grow into a global talent. In this study, we verified the effects of usefulness of training prior to the departure of overseas employment on the local adaption, as well as the mediation effect of learning transfer and the moderation effect of cultural intelligence among these variable factors. For verification, a survey was conducted among overseas employees who had participated in training and 133 questionnaires were used for analysis through self-reporting surveys. First, the usefulness of training prior to the departure of overseas employment of overseas employees has a positive effect on the both local adaptation and the learning transfer, respectively according to the analysis. Secondly, it has been confirmed that the learning transfer of overseas employees has a positive influence on local adaptation. Third, it has been confirmed that the learning transfer of overseas employees fully mediated the relationship between the usefulness of pre-departure training of overseas employment and the adaptation. Fourth, it has been confirmed that the cultural intelligence of overseas employees regulates the relationship between learning transfer and adaptation. According to the research, the usefulness of pre-departure training of overseas employment can strengthen adaptation, and cultural intelligence of overseas employees can also increase adaptation. The significance can be found in that it offers important implications for the composition and operation of pre-departure training programs of overseas employment.