Purpose: An increasing number of students delay graduation or graduate without a job, because they are not ready to make a career decision. In addition, the growing number of young adults who are not in education, employment or training (NEET) has become a social concern in South Korea. To facilitate career decision-making of undergraduates, this study examined the effects of work value orientation and academic major orientation on career decision-making self-efficacy (CDMSE). The purpose of this paper is to examine the relationships among South Korean undergraduates' intrinsic work value orientation, extrinsic work value orientation, academic major satisfaction and CDMSE. Design/methodology/approach: Based on the literature review, this study tested a research model using structural equation modeling with survey results of 217 undergraduates. Findings: The research results indicated that intrinsic work value orientation influenced academic major satisfaction and CDMSE. However, extrinsic work value orientation turned out to influence neither academic major satisfaction nor CDMSE. Academic major satisfaction also seemed to affect the CDMSE of the students in this study. Originality/value: This study contributes to the field of career development by explaining the significance of undergraduates' intrinsic work value orientation and academic major satisfaction on career decision-making. Whereas most research has focused on the effects of CDMSE, this study investigated the factors that influence undergraduates' CDMSE.