To control healthcare costs it is essential to analyze and improve staffing, the largest organizational expense, by improving utilization of human resources. King Faisal Specialist Hospital and Research Center explored overtime utilization patterns. There was no significant correlation between overtime utilization and workload (P=0.91, r=0.04) or number of staff (P=0.71, r=0.12). Some departments showed a positive correlation between overtime utilization and workloads, others showed no correlation or even a negative correlation between overtime utilization and workloads. Consideration of other factors is recommended, including staff turnover rates, productivity and efficiency, staff competency and training. Further analysis of overtime utilization should be conducted per employees' grade and profession, to compare the utilization of the technical, nontechnical and administrative staff members. The hospital information system should not only be used to login overtime utilization and workload, but should also be enhanced to monitor, control and analyze these performance indicators.