Doubter, here is another way to look at it, where I live in Australia we have very strong work place health and safety laws that are designed to reduce on the job accidents and injuries.
As an employer I must have documented operating procedures and systems in place to identify and eliminate unsafe work practices, for the benefit of my workers.
If one of my workers suffers a serious injury or killed at work and it can be traced back to an unsafe machine or a unsafe work method etc that could have been made safe, then I would be in the line of fire for negligence.
How is the WTB$ any different, their policy is "oh you got hurt at work, have you got two witnesses?... sorry" and your report joins the huge bulge under the carpet.