What construction workers know about safety — and how to draw it out

When we show a small group of construction workers a photograph of a real accident, something interesting happens. The conversation that follows is rarely what you’d get from a survey or a toolbox talk.

OPALs — Other People’s Accident Lessons — is an experimental approach to workplace safety that my colleague, a retired construction safety inspector with 30 years of experience, and I have been developing and testing on construction sites. The group is typically around a dozen people: dumper drivers, excavator operators, other tradespeople, a team leader. The accident in the photograph involves the kind of work they do, but has nothing to do with them or their company. We open with a single question: how do you stop this happening to you?

Workers name practical precautions — methods, equipment, physical conditions. When they mention something more abstract, like training or a method statement, we press them: what physical thing does that actually put in place? Then, precaution by precaution, we ask about first-hand experience: has this worked for you? Has it ever failed?

That’s when the stories come. A colleague buried to his waist in soil from the collapsed sides of an unstepped trench, rescued with broken legs. A member of the public wandering onto a site, oblivious to the thumbs-up protocol that keeps pedestrians safe around excavator drivers — spotted by the driver, fortunately, but only just. Stories like these command the room. Colleagues hear things for the first time. One account triggers another. Grievances surface — about service companies whose sloppy work creates risks for everyone downstream. So do warmer moments: recognition of a team’s professionalism, pride in doing things right.

The method works best when the conditions are right: a room that fits the group, a team who know and trust each other, enough time away from the pull of a break. When those things align, the conversation that emerges is something a checklist could never produce.