You may have come across the accident triangle in training. What does it actually mean day to day?
The original comes from Heinrich in the 1930s, showing that for every serious injury there are dozens of minor injuries and hundreds of near misses. His refined version put it at roughly 10 minor injuries, 30 property damage cases and 600 near misses for every serious incident.
Those ratios come from different eras, sectors and countries, and they reinforce something most of us know instinctively. Serious incidents rarely come out of nowhere. They are usually preceded by events that looked trivial and were easy to ignore.
Why near misses go unreported
Like any behaviour, near miss reporting is shaped by environment, attitude and culture. The same patterns come up again and again.
People do not recognise they have had a near miss, so they do not report it. Because nobody was hurt, it does not feel serious. Investigation then feels like paperwork for its own sake. People worry they will be blamed, or that reporting creates hassle. Supervisors are busy with the day job and have no time to follow up.
So everyone moves on. Which is a shame, because near miss investigation is one of the best chances you get to prevent future harm.
Five things that actually help
Make it normal. Build reporting into daily routine. Toolbox talks, quick site briefings and group chats all work.
Make it easy. Can someone send a note or a photo to a shared inbox? If it takes more than two minutes, it is probably too long.
Remove the fear. Reassure people it is about improvement, not blame. That applies to supervisors too.
Show it leads somewhere. Nothing kills reporting faster than nothing ever getting done. Tell people what changed. A thank you goes a long way.
Walk the walk. If managers dismiss near misses as nothing, so will everyone else.
Every near miss is an early warning and a chance to intervene. The challenge is recognising that significance and acting before it turns into something more serious.
