A supply clerk handles inventory in a warehouse, retail store, or office setting. Job duties include receiving material and supplies, organizing items in storage, maintaining inventory records, stocking shelves, retrieving items for sales orders, and using electronic tracking equipment. The qualifications for a career as a supply clerk are a high school diploma or GED certificate and computer skills. On-the-job training gives you the skills you need and provides you with experience before you start performing the job independently.