As the headline suggests, today's public information lesson is entitled: why you should always look where you're going in the workplace. (Alternative title: why workplaces should always keep their cellar doors shut.)
In this CCTV footage - courtesy of carambatelevision2 on YouTube - we see how one apparently devil-may-care man pays the price for not being alert behind the bar of a pub and promptly falls into the cellar. We wonder if he's still down there...
And if you're in the mood to laugh at more unfortunate caught-on-CCTV moments, you're in luck. We've got 16 of them right here: