DETERMINING THE IMPACT OF WORK-LIFE BALANCE AND JOB SATISFACTION ON NURSES' PERFORMANCE IN TEACHING HOSPITALS: A CROSS-SECTIONAL STUDY Nursing is a noble profession that involves caring for disabled patients. The demanding nature of nursing work has an impact on their work-life balance (WLB). Workplace stress also negatively affects work-life balance, job satisfaction, and performance. This research aims to determine the impacts of work-life balance and job satisfaction on nurses’ performance in a teaching hospital. This cross-sectional survey, employing purposive sampling, involved 205 registered nurses across diverse departments at Hospital Sultan Abdul Aziz Shah (HSAAS), UPM. This study utilized the Work-life Balance Scale, Job Satisfaction Scale, and Job Performance Scale as research instruments to measure work-life balance, job satisfaction, and job performance among nurses. The finding revealed a moderate to high level of WLB among nurses in teaching hospitals (M = 54.39, SD = 9.439). The relationship between work-life balance and the performance of nurses was reported to be significant (p < 0.000). There is a positive correlation between job satisfaction and job performance in nursing (p < 0.001, r = 0.574). Additionally, the research revealed a significant association between nurses’ work hours and their degree of work-life balance (p = 0.01). In addition, nurses’ service duration was also associated with their work-life balance (p < 0.001). The findings indicate that WLB and job satisfaction significantly influence nurses’ performance. The findings also emphasize the necessity of work-life balance and job satisfaction strategies to achieve high performance in nursing.