How 250+ Projects Turned Risk Perception Into Field Control
Risk perception matures when weak signals change controls, permits, supervision, and escalation thresholds rather than staying inside campaigns or observation counts.

Key takeaways
- 01Risk perception becomes useful only when a weak signal changes a control, a permit, a design decision, or an escalation threshold.
- 02Campaigns improve language, but they do not reduce exposure unless leaders remove the obstacle that made the unsafe adaptation reasonable.
- 03The strongest evidence is not observation volume. It is verified control change, feedback to the crew, and repeated exposure removed.
- 04Supervisors need a route from worker concern to field verification, because perception without authority turns into frustration.
- 05EHS managers should audit repeated weak signals by owner, control status, response time, and proof that the next task changed.
Risk perception does not improve because a company prints sharper posters. It improves when leaders convert what people notice in the field into different controls, different timing, and different decisions before exposure becomes normal.
Risk perception is the worker's and leader's ability to notice exposure, interpret weak signals, and choose a safer action before the task drifts. In safety management, it becomes useful only when the observation changes a control, a permit, a briefing, a design decision, or a stop-work threshold.
Initial scenario
In many industrial sites, risk perception begins as a campaign. The wall receives a new banner, the toolbox talk receives a new slide, and the supervisor receives a reminder to tell the crew to pay attention. The visible activity looks positive, although the work itself may remain unchanged. People are asked to see risk more clearly while the system keeps rewarding speed, routine shortcuts, and silence.
Across 25+ years leading EHS at multinationals, Andreza Araújo has seen the same pattern in operations that looked disciplined from the office and fragile from the worksite. The leadership team believed the issue was awareness. The field evidence showed a different problem: workers had often seen the exposure, but the organization had not given them a reliable path to change the task.
That distinction matters for risk management. A mechanic who notices a missing guard but cannot get maintenance time, a driver who sees fatigue but cannot change the route, or a contractor who doubts an isolation but fears delay is not suffering from lack of perception alone. The person is operating inside a decision system that treats perception as personal responsibility instead of control intelligence.
Decision
The turning point in Andreza Araújo's work across more than 250 cultural transformation projects has been to move risk perception out of the motivational lane and into the control lane. The question stops being "Did people pay attention?" and becomes "What changed because someone noticed a weak signal?" That is a harder question, because it tests supervision, engineering, planning, procurement, and production priorities.
As Andreza Araújo argues in Safety Culture: From Theory to Practice, culture appears in repeated decisions before it appears in slogans. Risk perception follows the same rule. If a worker notices exposure and the next decision is still to continue under the same weak barrier, the organization has not gained prevention. It has only collected discomfort.
The decision also required separating risk perception from blame. James Reason's work on latent failures helps explain why an unsafe action can be the final visible point in a longer chain of weak conditions. Andreza's Portuguese book Sorte ou Capacidade, "Luck or Capability", reinforces that accidents should not be treated as bad luck or individual failure when repeated conditions made the event predictable.
Execution
The practical execution starts with a small change in the observation routine. Instead of asking observers to count unsafe acts, the process asks them to describe the exposure, the control in doubt, the reason the shortcut made sense, and the next decision needed to remove or reduce the risk. This turns a behavior record into an operational signal.
That signal then needs a route. A weak perception signal connected to a critical control should move quickly into verification, not wait for the next monthly meeting. The article on critical control registers and bow-tie reviews is a useful companion because it shows how serious exposure must be tied to named barriers rather than general concern.
Supervisors also need a different script. A worker who says, "This looks wrong", should not receive a lecture about awareness. The supervisor should ask what changed in the task, which barrier is uncertain, whether anyone has done the job under the same condition before, and what decision would make the work safer now. The related guide on behavioral observation calibration helps align observers so the conversation does not depend on personality.
In field implementation, Andreza Araújo's team has often found that the strongest improvement comes from closing the loop within the shift. When a weak signal leads to a barricade change, a revised lifting path, a delayed start, a permit correction, or an engineering request, workers learn that perception has operational value. When nothing changes, they learn that reporting risk only creates paperwork.
Measured result
The defensible measured result from Andreza Araújo's public track record is not a fabricated client statistic. It is the scale of application: more than 250 companies served across 30+ countries, plus executive experience in complex multinational operations. That footprint supports a pattern, not a private claim. The pattern is consistent: risk perception matures when leaders track control changes, not only observation volume.
During Andreza's tenure at PepsiCo South America, where the accident ratio fell 50% in six months under a 180-day plan, the lesson for this article is not that every company will reproduce the same number. The useful lesson is that cadence, follow-up, and leadership ownership can move safety from declared commitment to operated control. A perception program without those three elements remains fragile.
For an EHS manager, the practical measurement should include the number of perception signals verified in the field, the percentage that changed a control, the average time to close feedback to the crew, and the number of repeated signals that escalated to a risk owner. These indicators are stronger than counting how many people attended a training session or how many forms were submitted.
Before and after
| Dimension | Campaign model | Control model |
|---|---|---|
| Main question | Did people notice the hazard? | What decision changed after the weak signal? |
| Primary evidence | Training attendance, posters, observation count | Verified controls, corrected permits, escalated constraints |
| Supervisor role | Remind the crew to be careful | Test the barrier and remove the obstacle |
| EHS role | Run the campaign and collect forms | Convert patterns into risk treatment and governance |
| Executive signal | High participation rate | Fewer repeated exposures and faster control restoration |
The table exposes a common trap. A high participation rate can hide a weak system if the same line-of-fire exposure, failed isolation, poor housekeeping, or vehicle-pedestrian conflict appears every week. In that case, the organization has awareness without authority.
Generalizable lessons
The first lesson is that risk perception must be connected to the hierarchy of controls. If the same exposure repeatedly ends with PPE, reminders, or extra caution, the organization should ask why engineering, substitution, planning, or elimination did not enter the decision. The article on Prevention through Design gaps shows why many risks are built into the work before the worker ever arrives.
The second lesson is that perception needs thresholds. A supervisor should know when a weak signal is only watched, when it requires verification, when it escalates, and when work stops. Without thresholds, every decision depends on courage in the moment. The related piece on risk trigger thresholds gives a structure for that escalation path.
The third lesson is that leaders should measure repeated exposure, not repeated messaging. If the same unsafe condition returns, the problem is not that people forgot the campaign. The problem is that the control system allowed the condition to return. This is where risk perception becomes a management review issue rather than a communication issue.
What to apply in your operation
Start with one high-risk work family, such as LOTO, lifting, confined space, hot work, mobile equipment, or contractor maintenance. Review the last 20 observation records, near misses, permits, and supervisor notes. For each one, mark whether it described a real exposure, named the control in doubt, led to field verification, changed a decision, and returned feedback to the crew.
Then select the 3 most repeated weak signals and assign an owner who can change the condition. One signal may belong to supervision because the briefing is unclear. Another may belong to engineering because the access point is poorly designed. A third may belong to procurement because the contractor interface rewards speed over control. The owner should not be whoever filled out the form. The owner should be whoever can change the exposure.
Finally, add the pattern to the risk register only if it changes management. A register that stores risk perception signals without thresholds, owners, and review dates becomes another archive. The article on risk register cleanup shows how to rebuild the register so it supports decisions rather than collecting stale descriptions.
Where leaders usually fail
Leaders fail when they confuse visible communication with operational learning. A campaign can create language, but it cannot replace time, authority, tools, engineering, or supervision. If a worker notices risk and the system still asks that person to adapt around it, the campaign has shifted responsibility downward.
A second failure is punishing the signal. Sometimes the punishment is formal, but often it is social: irritation, sarcasm, delayed response, or the quiet label of being difficult. Once the crew learns that risk perception creates friction without change, the next warning stays inside the group. That silence is not proof that risk went down.
A third failure is treating risk perception as a soft topic. In reality, it is a hard control issue because weak perception signals often point to missing barriers, design flaws, production pressure, fatigue, or poor decision rights. In Make The Difference: Be a Leader in Health & Safety, Andreza Araújo frames leadership as daily action, and risk perception tests that action at the exact moment when work is still adjustable.
Conclusion
Risk perception becomes valuable when the organization can prove what changed after someone saw the weak signal. The strongest programs do not ask workers to carry the whole burden of attention. They build a route from observation to verification, from verification to control, and from control to leadership accountability.
For companies ready to make that shift, ACS Global Ventures and Andreza Araújo's Safety School connect cultural diagnosis, leadership routines, risk governance, and field conversations. Visit Andreza Araújo to move risk perception from campaign language to a working safety control system.
Frequently asked questions
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About the author
Andreza Araújo
Safety Culture Expert | Senior EHS Executive
Andreza Araújo is a safety culture expert and senior EHS executive with more than 25 years of experience in environment, health and safety. She is a Civil Engineer and Occupational Safety Engineer from Unicamp, holds a Master's degree in Environmental Diplomacy from the University of Geneva, and completed sustainability studies at IMD Switzerland. Andreza has served in Global Head of EHS roles in Fortune 500 environments, leading cultural transformation programs across multinational operations. She has represented Brazil as a speaker at the United Nations in Paris and has spoken at the International Labour Organization in Turin. She is the author of more than 16 books on safety culture in Portuguese, Spanish, English and German. Her work has earned more than 10 EHS awards, including two recognitions from Indra Nooyi, former PepsiCo CEO.
- Civil & Safety Engineer (Unicamp)
- M.A. Environmental Diplomacy (University of Geneva)
- Sustainability Cert (IMD Switzerland)
- People Management & Coaching (Ohio University)
- UN Paris speaker representative for Brazil
- ILO Turin speaker
- LinkedIn Top Voice
- Indra Nooyi PepsiCo CEO recognition (2x)
Documentaries
Watch Andreza's documentaries
Three productions on safety culture, organizational failure and the human lessons behind major disasters.
Podcasts
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She hosts three shows on safety leadership, EHS and organizational culture, in English and Portuguese.