**5. PATH (posture, activities, tools, and handling) data collection**

PATH method [6, 7], was used to code posture, activities, tools used and materials handled at every moment for at least 3–4 hours every day with a hierarchical taxonomy. Since the drywall installation task is cyclical in nature, we collected data for a week that is absolutely representative of the whole task. We used fixed intervals to make direct observations and coded postures into a PDA.
