Ensure all necessary forms are completed; ensure all materials are stocked to the appropriate level per exchange cart; report all inventory discrepancies to Buyer/Planner, Supervisors, and/or Materials Manager; inventory and maintain medical equipment supply levels. Heavy - This category includes physically intensive work such as lifting heavy materials (up to 100 lbs.), climbing ladders, crawling into tight spaces, and working on uneven, slippery, or elevated surfaces.