Introduction: High workloads among medical professionals can have adverse effects on their performance, the quality and safety of patient care. However, Zoljargal’s 2021 study indicates that existing legal documents frequently offer additional compensation based on factors like skill level and exposure to hazardous conditions, all while lacking a comprehensive assessment of work performance, actual working hours, knowledge, experience, and workload. This research gap underscores the importance of investigating the workload of medical pharmacy professionals. Methods: The research utilized chronometric methods and content analysis. Result In the study, a total of 42 professionals participated. The work efficiency of professionals in the departments of research institutions of levels II and III was studied using the method of chronometry, and they worked for an average of 44.9±3.236 hours over 5 working days, with 12.5-20.4 hours (31.25%-51%) spent on core tasks and 8.2-14.2 hours (20.5%-35.5%) on documentation tasks. Additionally, the workload of professionals in research institutions is highest on Tuesdays and Fridays, with 9.1 hours and 8.7 hours of work, respectively. The employees worked for an average of 35.15 hours and a maximum of 51.62 hours per week, with an average of 45.015±3.236 hours