Purpose: The purpose of this study was to identify turnover intentions in part-time workers with psychiatric disabilities. Methods: Participants were 146 part-time workers with mentally disabilities living in B-city and Y-city. The data were collected from October 15 to December 22, 2014 using self-report questionnaires which included measures of turnover intentions, working environment, job satisfaction, social support, family support and internalized stigma. For data analysis descriptive statistics, x2-test, t-test, Pearson correlation coefficients, hierarchial multiple regression analysis were performed using SPSS/WIN 18.0. Results: The average score for turnover intention was 3.1±0.7. Turnover intention was related to job satisfaction and case management satisfaction. The predicting factors for turnover intention were job satisfaction, case management satisfaction, male gender, monthly pay and number of disabled workers. These factors explained 82% of turnover intention. Conclusion: Based on the outcomes of this study, it is necessary to design an intervention program that emphasizes case management and job satisfaction in order to decrease turnover intentions of part-time workers with mentally disabilities.