Abstract
This study aims to investigate the relationships between all sizes of underemployment and turnover intention. The data obtained using the survey method were analyzed by statistical methods such as Exploratory Factor Analysis, Kruskal Wallis H, Mann Whitney U, Spearman Correlation Analysis. It was concluded that the turnover intention scores of those who work in jobs whose average weekly working hours are not compatible with their preferred working hours, who are involuntary part-time and temporary or of limited term, who receive less wages than their previous jobs, and which are not suitable for their education level, are higher. The empirical results show a significant and positive link between overqualification-underemployment and turnover intention. All the study’s hypotheses were accepted, and implications were discussed.