Risk evaluation The ladder that the workers are expected to use puts them at significantly greater risk of injury. A good visual way of demonstrating and understanding this is to draw a risk matrix like the one shown below. Assuming that you are teaching someone who has never seen this kind of risk matrix before (a) show how the matrix can be used to confirm that the risk level was not acceptable when the ladder was used for the banner hanging activity. Note: Show your calculations and support the calculations, where applicable, using information from the scenario