A material handler, also known as a package handler, is responsible for moving materials within a building or from a vehicle to a building. This role is essential in various supply chains, such as manufacturing, shipping, and customer receiving. Material handlers may also be involved in tasks like feeding materials into machines, cleaning vehicles, and packing materials for transportation. Other terms used to describe a material handler include loader, unloader, porter, warehouse associate, hand laborer, freight handler, chemical handler, retail handler, and parts handler.