NEBOSH National Diploma in Occupational
Health and Safety Management Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download Pdf
1. Which of the following best describes the primary aim of an
occupational health and safety management system (OHSMS)?
A. To comply with legal requirements only
B. To reduce costs associated with workplace accidents
C. To proactively manage health and safety risks to protect
employees
D. To maintain company reputation
Rationale: The primary aim of an OHSMS is to proactively identify and
manage health and safety risks in the workplace to protect employees
and others who may be affected, rather than merely ensuring
compliance or cost savings.
2. Which model describes the sequence of events leading to a
workplace accident?
, A. Risk Assessment Model
B. Heinrich’s Domino Theory
C. Bowtie Model
D. Fishbone Diagram
Rationale: Heinrich’s Domino Theory suggests that accidents result from
a chain of sequential events, often starting with unsafe acts or
conditions, which, if removed, could prevent the accident.
3. Which of the following is a key principle of risk assessment?
A. Ignoring minor risks
B. Identifying hazards, evaluating risks, and implementing
control measures
C. Delegating responsibility entirely to supervisors
D. Relying solely on past incident reports
Rationale: Effective risk assessment involves identifying potential
hazards, evaluating the likelihood and severity of associated risks, and
implementing appropriate control measures.
4. The term “reasonably practicable” in health and safety law
primarily considers:
, A. Financial resources only
B. The balance between risk level and the cost, time, and effort
required to mitigate it
C. The number of employees at risk
D. The potential media attention
Rationale: “Reasonably practicable” means that an employer must
weigh the risk against the time, effort, and cost necessary to reduce it,
ensuring measures are proportionate to the hazard.
5. Which of the following is an example of an engineering control to
prevent workplace hazards?
A. Safety training programs
B. Machine guarding
C. Personal protective equipment (PPE)
D. Signage
Rationale: Engineering controls, such as machine guards, isolate
employees from hazards, whereas training and PPE are administrative
or personal-level controls.
, 6. Which international standard specifies requirements for
occupational health and safety management systems?
A. ISO 9001
B. OHSAS 18001
C. ISO 45001
D. ISO 14001
Rationale: ISO 45001 provides the international framework for an
OHSMS, outlining requirements for identifying hazards, risk
management, and continuous improvement.
7. What is the main purpose of a “safety culture” assessment in an
organization?
A. To evaluate legal compliance only
B. To punish non-compliant employees
C. To understand employees’ attitudes, beliefs, and perceptions
about safety
D. To identify training needs exclusively
Rationale: Assessing safety culture helps organizations understand
underlying attitudes and behaviors that influence safety performance,
beyond just formal compliance.
Health and Safety Management Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download Pdf
1. Which of the following best describes the primary aim of an
occupational health and safety management system (OHSMS)?
A. To comply with legal requirements only
B. To reduce costs associated with workplace accidents
C. To proactively manage health and safety risks to protect
employees
D. To maintain company reputation
Rationale: The primary aim of an OHSMS is to proactively identify and
manage health and safety risks in the workplace to protect employees
and others who may be affected, rather than merely ensuring
compliance or cost savings.
2. Which model describes the sequence of events leading to a
workplace accident?
, A. Risk Assessment Model
B. Heinrich’s Domino Theory
C. Bowtie Model
D. Fishbone Diagram
Rationale: Heinrich’s Domino Theory suggests that accidents result from
a chain of sequential events, often starting with unsafe acts or
conditions, which, if removed, could prevent the accident.
3. Which of the following is a key principle of risk assessment?
A. Ignoring minor risks
B. Identifying hazards, evaluating risks, and implementing
control measures
C. Delegating responsibility entirely to supervisors
D. Relying solely on past incident reports
Rationale: Effective risk assessment involves identifying potential
hazards, evaluating the likelihood and severity of associated risks, and
implementing appropriate control measures.
4. The term “reasonably practicable” in health and safety law
primarily considers:
, A. Financial resources only
B. The balance between risk level and the cost, time, and effort
required to mitigate it
C. The number of employees at risk
D. The potential media attention
Rationale: “Reasonably practicable” means that an employer must
weigh the risk against the time, effort, and cost necessary to reduce it,
ensuring measures are proportionate to the hazard.
5. Which of the following is an example of an engineering control to
prevent workplace hazards?
A. Safety training programs
B. Machine guarding
C. Personal protective equipment (PPE)
D. Signage
Rationale: Engineering controls, such as machine guards, isolate
employees from hazards, whereas training and PPE are administrative
or personal-level controls.
, 6. Which international standard specifies requirements for
occupational health and safety management systems?
A. ISO 9001
B. OHSAS 18001
C. ISO 45001
D. ISO 14001
Rationale: ISO 45001 provides the international framework for an
OHSMS, outlining requirements for identifying hazards, risk
management, and continuous improvement.
7. What is the main purpose of a “safety culture” assessment in an
organization?
A. To evaluate legal compliance only
B. To punish non-compliant employees
C. To understand employees’ attitudes, beliefs, and perceptions
about safety
D. To identify training needs exclusively
Rationale: Assessing safety culture helps organizations understand
underlying attitudes and behaviors that influence safety performance,
beyond just formal compliance.
