You may be interested in the Lean Construction white paper, "Working Near the Edge: A New Approach to Construction Safety". (leanconstruction.com) I'm currently developing a presentation for a captive biweekly safety meeting audience intending to make this theoretical perspective positively captivating.
Also, as my thespian mother advised her students, "Speak to the back wall, then you'll never have to think further about effective voice volume for the room size."