There is limited information concerning the experiences and career decision-making processes of male sex workers in South Korea. The aim of this study was to understand the motivations, career decisions, and decision-making processes of a group of male university students and graduates who decided to join the sex work profession in South Korea as part of their career development. Qualitative research design and snowball strategies were employed in 2021 with nine male sex workers. Interview sessions, online focus group activity, remarkable items sharing, and member-checking interview sessions were undertaken to collect rich stories and promote understanding of male sex workers who are completing or have completed their bachelor's degrees in South Korea. Based on the social cognitive career and motivation theory, three main themes were highlighted: (1) financial consideration, (2) personal interest in sexual activities, and (3) limited career opportunities for the younger generation. The findings illustrate the motivations of a group of educated male sex workers and the social issues for sex workers in South Korea. Government bodies, policymakers, and non-profit organizations may use this study as a reference for policy development and human resources schemes.