The focus of this study is on the career development in adolescent. Since the career path is not fixed, rather changing over time, it is necessary to study the career development in adolescence. Thus, using the 11th wave data of the Korean Education & Employment Panel (KEEP), this study attempts to categorize the change of youth career development over time and verifies how those categories have effects on labor market outcomes, including income and job satisfaction. For this purpose, this study applied the two-part growth mixture model and conducted the Lanza approach analysis. The results of the study show that adolescent's career development can be categorized into five different patterns, including the career indecision group. Moreover, the group with a high level of career development has greater achievement of the labor market outcomes. Detailed explanations and implications of these findings are discussed in the paper.