This diagram shows a Safety Maturity Model—a framework that explains how an organization’s safety culture evolves over time, and how that evolution reduces injury rates.
At its core, the model answers one question:
๐ How seriously do people take safety—and who is responsible for it?
๐ป 1. The Axes (What the chart is telling you)
Vertical axis: Injury Rates
Top = High injuries
Bottom = Low injuries
➡️ As you move downward, safety improves.
Horizontal axis: Stages of Safety Culture
From left to right:
Instinctive
Supervision Required
Personal Value
Team Value
➡️ As you move right, safety maturity increases.
The red line shows the key message:
๐ As safety culture matures, injury rates decrease.
๐งฑ 2. Stage-by-Stage Explanation
๐ฅ Stage 1: Instinctive (No System)
Characteristics:
No formal safety system
Few or no rules
Decisions based on:
Common sense
Personal experience
Safety seen as luck-based
Mindset:
“Accidents happen… nothing much we can do.”
Reality:
Very reactive
High risk, high injury rates
No consistency
Example:
A worker operates a machine based on “how it’s always been done” without SOP.
๐ง Stage 2: Dependent (Directive / Supervision Required)
Characteristics:
Rules, procedures, and laws exist
Safety enforced by:
Supervisors
Management
Discipline used when rules are broken
Mindset:
“I follow safety because my boss tells me.”
Key Traits:
“I say – You do”
Compliance-driven
Workers depend on supervision
Reality:
Some improvement in safety
Still not internalized
If supervision disappears → safety drops
Example:
Workers wear PPE only when supervisor is present.
๐จ Stage 3: Independent (Personal Value / Duty of Care)
Characteristics:
Individuals take personal responsibility
Safety becomes a habit
Clear goals and targets
Employees are recognized for safe behavior
Mindset:
“Safety is my responsibility.”
Key Concept: Duty of Care
People understand:
Their actions create risks
They must manage those risks
Reality:
Big drop in injury rates
Less reliance on supervision
Strong internal motivation
Example:
A worker stops a job because it feels unsafe—even without being told.
๐ฉ Stage 4: Interdependent (Team Value / Safety Culture)
Characteristics:
Safety is embedded in culture
Team-based accountability
Workers:
Look out for each other
Intervene when unsafe behavior is seen
Mindset:
“We are responsible for each other’s safety.”
Key Traits:
Collaboration
Peer-to-peer feedback
Strong trust
Reality:
Lowest injury rates
Sustainable safety performance
Prevention of major incidents
Example:
A colleague stops another worker and says:
“Hey, that’s not safe—let’s fix it together.”
๐ 3. Why Injury Rates Drop
As organizations move right:
| Stage | Why injuries reduce |
|---|---|
| Instinctive | No control → high risk |
| Dependent | Rules reduce variability |
| Independent | Personal ownership prevents errors |
| Interdependent | Team intervention prevents incidents before they happen |
๐ 4. Key Insight (Most Important Takeaway)
๐ Safety evolution is not about rules—it’s about mindset
Early stage: Safety = external control
Middle stage: Safety = personal responsibility
Advanced stage: Safety = shared culture
⚠️ 5. Common Mistake
Many organizations get stuck in Stage 2 (Dependent) because:
They rely too much on:
SOPs
Audits
Enforcement
But:
๐ Rules alone cannot create a strong safety culture
๐ 6. How to Move to Higher Stages
From Dependent → Independent
Encourage ownership
Recognize safe behavior
Build awareness
From Independent → Interdependent
Promote teamwork
Encourage speaking up
Build trust (no blame culture)
๐ง Simple Analogy
Think of driving:
Stage 1: No rules → chaos
Stage 2: Follow traffic police
Stage 3: You drive safely even alone
Stage 4: You also protect other drivers
✅ Final Summary
This model shows a powerful progression:
๐ Safety is not enforced—it is developed.
The goal is not just compliance, but:
➡️ A culture where everyone actively protects everyone else
Here are credible references you can include to support the Safety Maturity Model explanation. I’ve grouped them into primary (foundational) and supporting (application & industry use) sources.
๐ Primary References (Core Safety Culture & Maturity Models)
1. Hudson, P. (2001)
Title: Safety Management and Safety Culture: The Long, Hard and Winding Road
Author: Patrick Hudson
Contribution:
Introduced one of the most widely used safety culture maturity models
Defined progression similar to:
Pathological → Reactive → Calculative → Proactive → Generative
Relevance:
Your diagram aligns closely with Hudson’s maturity progression
2. Health and Safety Executive (HSE, UK)
Document: Developing a Safety Culture (HSG65 & related publications)
Contribution:
Emphasizes:
Leadership
Employee involvement
Continuous improvement
Relevance:
Supports transition from dependent → interdependent culture
3. James Reason (1997)
Book: Managing the Risks of Organizational Accidents
Contribution:
Introduced:
Swiss Cheese Model
Concept of organizational vs human failure
Relevance:
Explains why stronger safety culture reduces incidents
๐ Supporting References (Behavior & Culture Development)
4. E. Scott Geller (2001)
Book: The Psychology of Safety Handbook
Contribution:
Developed concept of:
Dependent → Independent → Interdependent safety culture
Relevance:
Directly matches the stages shown in your diagram
5. DuPont Bradley Curve
Model: DuPont Safety Culture Curve
Stages:
Reactive → Dependent → Independent → Interdependent
Relevance:
Your diagram is strongly aligned with this industry model
6. International Association of Oil & Gas Producers
Report: Safety Culture – From Compliance to Commitment
Contribution:
Focus on:
High-risk industries
Leadership and culture transformation
Relevance:
Useful for process safety / plant operations
๐ Additional Academic References
7. Cooper, M. D. (2000)
Title: Towards a Model of Safety Culture
Contribution:
Defines safety culture as:
Psychological
Behavioral
Situational elements
8. Guldenmund, F. W. (2000)
Title: The Nature of Safety Culture: A Review of Theory and Research
Contribution:
Comprehensive academic review of safety culture models
๐งพ Suggested Citation (APA Style Example)
You can use this for your report or ebook:
Hudson, P. (2001). Safety management and safety culture: The long, hard and winding road.
Reason, J. (1997). Managing the risks of organizational accidents. Ashgate.
Geller, E. S. (2001). The psychology of safety handbook. CRC Press.
Health and Safety Executive (HSE). (1997). Successful health and safety management (HSG65).
DuPont. (n.d.). DuPont Bradley Curve™.
✅ Simple Reference Summary (for slide or poster)
You can shorten it like this:
Hudson (2001) – Safety Culture Maturity Model
Reason (1997) – Organizational Accident Theory
Geller (2001) – Behavioral Safety & Interdependence
HSE (UK) – Safety Management Systems
DuPont Bradley Curve – Industry Application

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