Incorrect use of equipment: Trolleys are for carrying heavy loads of goods, not people. Milk crates are not stepladders. All electrical or gas equipment is for a certain type of job, instructions on how to use it should be followed. There are many other things in the workplace that cause accidents and illness. Accidents usually happen suddenly and without warning. You may get away with being careless once or even twice, but then suddenly, the worst happens....and accidents can be fatal.