This study employed structural and treatment analyses to determine factors that contributed to wrist posture safety in a small pharmacy. The pharmacy was located on a university campus and participants were three female pharmacy technicians. These particular employees had experienced various repetitive-motion injuries that resulted in a total of 36 lost days and 161 restricted days. Observers collected observational data on the participants' wrist posture in the presence and absence of an improvised wrist support device that participants placed under the computer keyboard. Average percentage safe for wrist position with a wrist support was higher for all three participants when compared to wrist position without a wrist support. These results indicated that the participants' wrist posture was considerably safer when the wrist support was present. The structural analysis proved valuable for aiding in the development of an intervention and in identifying variables that were responsible for the participants' wrist posture. (Contains 1 table and 3 figures.)