It's in a lot of safety books you read. Somehow you need to find someone who's fully accountable for safety in an organization.
Safety has been, for many years, the job of a lot of people. It is very hard to pinpoint who is really accountable. This supervisor does this and that supervisor does that, and things like that. Now we want someone we can go to who we know has full authority, directly from the CEO, to get things done and to make the changes that may be required for having a safer workplace. Now we know who to go to.