No such thing as mail man anymore in Australia. All mail is private operations contracted out to other organisations and people. One day you use one company to sent a letter, next its a 10kg box, next its 8 pallets. What used to be the government mail system was privatised and in many cases is now more expensive than most. If the business is found to have determined that they did everything int he power to prevent an ACCIDENT, then they usually get a pass. A muslim fanatic probably wouldn't cause an issues. But even if someone falls asleep for a second and causes an accident, goes all the way up the top. Which comes back to trucks too as they have a severe fatigue management system that they have to adhere to. More on the point of heavy regulation.