1. Draw the following hazardous scenario on a cause and effect diagram. A plant maintenance worker, John, was using an aluminium ladder to reach the gutters of the two-storey office administration building. He was working alone and attempting to install a gutter guard device. It had been raining that morning and wooden decking surrounding the section of the office building he was working on was slippery. He had almost completed the task when he leant to his right to see around the corner of the roof and the ladder slipped to the left causing him to fall off it and break his arm as he landed.