The use of a nursing-workload-index indicator generated by the Medicus patient classification system was explored as a means of simplifying and validating a manual pharmacy-workload-reporting system. The pharmacy department of this 290-bed hospital monitors 14 activities in its productivity-measurement process. In an effort to validate this process, a 20-week study was conducted to evaluate the relationship between the nursing-workload-index data and the number of hours required to provide pharmaceutical services. Number of patient days and the nursing index were compared with respect to their reliability in predicting pharmacy workload. A significant correlation was found between the nursing index and the number of hours earned for pharmacy activities (with or without hours earned for processing admissions and discharges). Significant correlations were also found when the patient-days indicator was used, but those relationships were not as strong. The nursing-workload-index indicator studied was useful in validating the workload data generated by the pharmacy department.