Behaviour and culture: the core of the Veiligheidsladder
The Veiligheidsladder (Safety Culture Ladder, SCL) measures safety culture. Not your system, not your procedures, not your certificates. That is exactly what sets it apart from VCA and ISO 45001. A company can have all its paperwork in order and still score low on the 5 levels of the SCL, because the culture does not add up.
Safety culture is the way an organisation deals with safety in daily practice. It is about shared beliefs, habits and the behaviour of people on the shop floor. Not the posters on the wall, but what happens when nobody is watching. NEN has set down this principle in the Safety Culture Ladder .
On this page, we explain what safety culture means in practice, what role leadership plays, and how culture change works in practice. For the role of the auditor and the specific requirements per level, see those pages.
What is safety culture?
Safety culture answers the question: why do people act safely? There are two very different answers.
Answer A: “Because the rules say so and the supervisor checks it.” This is level 3: systems work, compliance is high, but the motivation is external.
Answer B: “Because we just do it this way. Everyone knows why it matters.” This is level 4: it sits in the culture, not in enforcement.
The difference seems subtle, but it has major practical consequences. With answer A, compliance slips as soon as supervision disappears. With answer B, it does not.
The role of leadership
Culture starts at the top. A director who puts on their own helmet on the building site, who takes near misses seriously and asks follow-up questions, who thanks people for signalling an unsafe situation: that director changes the culture. A director who delegates safety to the prevention officer and waits for the annual report does not.
This is not management advice but an audit criterion. The Veiligheidsladder explicitly assesses how leadership is visible in the daily safety behaviour of the organisation. An auditor asks employees: “When did you last see your supervisor do something about safety?” If the answer is “I can’t remember”, that is telling.
Level 4 requires that behaviour change is demonstrable at all levels. It is not enough for the board to say the right things during the audit. Employees on the shop floor must confirm it too, even when the board is not there.
Speak-up culture: the real measure
One of the sharpest signals of safety culture is whether people dare to speak up about unsafe behaviour. Not only a worker who speaks to a colleague, but also an employee who speaks to their supervisor. Or a subcontractor who tells their client that they consider a situation unsafe.
At levels 2 and 3, that is not normal. At level 4, it is simply how things are done.
A concrete example: a fitter at an installation company is working at height and sees that the right fall protection has not been fitted. A colleague says something. The fitter stops, talks it through, and they fix it together. Nobody feels attacked. Nobody is afraid of consequences. That is what speak-up culture looks like.
Cultures where people are afraid to report something, because they are poorly rewarded for it or because the reaction is always defensive, score low. An auditor sees this in the interviews, even when all procedures are perfect on paper.
How culture change works
Changing culture is not a project. It is a process that takes months to years. Three things contribute the most:
Leadership that truly believes in it. Culture is set from the top, but it cannot be forced from the top. If leaders apply different standards from the ones they promote, people see straight through it.
Positive reinforcement. When reporting is rewarded, more is reported. When people who raise something see that action is taken, they report more. If they only hear that they should not make such a fuss, they stop.
Consistency over time. One-off campaigns do not work. A safety awareness day once a year changes nothing structural. What works is that safety is a fixed topic every week, at every level, even when nothing has gone wrong.
For the practical route to certification, see the step-by-step plan.
What culture is not
You cannot buy a culture. You can write a procedure in an afternoon. You can implement a reporting system in a week. But you cannot buy a high level by producing more paperwork or by hiring an agency that “prepares the audit”.
An auditor recognises it when a company has trained its employees to give the “right answers”. Inconsistency between levels, overly identical answers, employees who cannot go beyond the script: these are all warning signs.
The honest route is also the most effective: start early, take the baseline measurement seriously, identify where behaviour really falls short, and work on that. It takes more time, but it delivers a real result.
Culture vs. system: the comparison
| VCA | ISO 45001 | Veiligheidsladder | |
|---|---|---|---|
| What is assessed? | System and documents | Management system | Culture and behaviour |
| Result | Pass/fail certificate | Certificate | Level 1-5 |
| Driving force | Compliance | Risk management | Culture change |
| Audit method | Checking documents and certificates | Testing system and processes | Interviews and observations |
A strong VCA system or ISO 45001 certificate helps you towards level 3, but does not guarantee it. The Veiligheidsladder asks for more than a good system. It asks that the system also truly lives in daily practice.
More about the Veiligheidsladder
- What is the Veiligheidsladder? - Overview of all topics
- The 5 levels - How culture becomes visible per level
- Requirements per level - What do auditors test per business aspect?
- The audit process - How does an auditor measure culture?
- Step-by-step plan - How do you improve your culture step by step?
- Veiligheidsladder vs. VCA - What do they measure differently?
- ISO 45001 - The occupational health and safety management system as a basis