Overview. The. Loader and Unloader. is responsible for manually or by hand truck move materials, supplies, and finished goods to designated places in the facility. . 3rd Shift Available. Responsibilities. Set up dock door for spotter to bring trailer in. Pattern load in system. Secure trailer once in dock door (stand, dock plate, dock lock, etc.). Unhook trailer once loading is complete. Inflate air bags as needed. Locate and install bulkheads fo...