The unimaginable accident occurs on your work site and somebody dials 000 for an emergency ambulance. Because it is a work site 000 informs police who must attend and seal the site until jurisdiction authority investigators arrive.
You are charged for non compliance and fined a few thousand dollars but that is only the start.
This is then followed by the litigation lawyers who get a cut of the action and you have no defence because of the successful prosecution by your jurisdiction authority. Face up to the potential of losing all you have worked for including your business, your savings and your home.