Ability to grasp, push, pull objects such as files, file cabinet drawers, clothing carts, merchandise carts, rolling clothing racks, fixtures, furniture dollies, platform trucks and carts, hand trucks and miscellaneous carts. 4. Training, instruct and supervise truck helper in their Work Therapy Assignment (WTA), keeping in mind that helper is in a rehabilitation program and that good personal and professional work habits are taught by example, as well as by instruction.