Exposure to the following should be expected: vibration (operating jackhammer, impact wrench, etc.), improperly illuminated or awkward and confining workspaces, and working above ground level when the possibility of falling exists (ladders, roof-tops, bucket trucks, scaffolding, etc.). Work is mostly completed outdoors, exposed to changing weather conditions, but may also be performed indoors in a climate-controlled office environment, indoors in a non-temperature-controlled environment, or outdoors in an enclosed vehicle or temporary shelter.