Risks can accumulate over time through exposure to different things over life which is a normal part of life generally. People who do a lot of crazy things are people who are more prone to having different kinds of risks being brought upon them. If you're working as a construction, it's more likely with time that you will suffer from some sort of work-related accident than someone who works in an office all day long.
It depends if you have insurance or not and the days but for 11 days it can go up to $8,500.
It changed because now lots of people look at it as being "gross"