The Real Safety System Is the One Nobody Wrote
The hidden layer of safety culture
In high-risk industries, most organisations have invested heavily in safety systems: procedures, reporting channels, audits, dashboards, investigations and briefings.
Those systems matter. But they do not always explain what people do when pressure rises, time is short, hierarchy is present, or speaking up feels risky.
That is where safety culture becomes visible.
For more than 35 years, Steve Simpson has worked with organisations to identify the hidden cultural forces that shape behaviour. His work centres on UGRs — Unwritten Ground Rules — people’s perceptions of “this is the way we do things around here.”
In a safety context, UGRs can explain why people stay silent, why concerns go unreported, why shortcuts become normalised, why accountability feels inconsistent, and why a formal commitment to safety can be weakened by everyday behaviour.
This work has become a significant part of Steve’s contribution to safety leadership. He has spoken at five consecutive international helicopter safety conferences in North America, as well as the HeliOffshore conference in Madrid. Across those audiences, one message consistently resonates: safety culture is not only shaped by systems. It is shaped by what people believe will really happen when they speak up, challenge a decision, admit a mistake or slow the work down.
Systems or culture?
A procedure may say, “Stop the job.”
The UGR may be, “Only stop the job if you are prepared for the fallout.”
A policy may say, “We have a Just Culture.”
The UGR may be, “It depends who made the mistake.”
A value may say, “Safety comes first.”
The UGR may be, “Safety comes first unless the job is running late.”
Steve’s work helps leaders uncover these unwritten rules and understand how they are influencing safety behaviour in practice. The goal is not to replace formal safety systems. It is to reveal the cultural layer that determines whether those systems are trusted, used and reinforced when it matters most. Just as importantly, the UGRs approach resonates with employees because it reflects the reality they experience every day. It helps them see that culture is not something created only by senior leaders, but something shaped by the conversations, choices and behaviours of everyone.
If your safety systems are strong but you suspect the lived culture is telling a different story, the next step is to examine the rules no one has written down.