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NCSO Exam Prep 2026/2027: Essential
Practice Tests for Safety Professionals |
Ace the ACSA Construction Safety Officer
Exam
Visual 1 (Refer to this for Questions 1-2)
Table 1: OHS Record Retention Requirements
Record Type Minimum Retention Period
First Aid Records 3 Years
Investigation Reports 2 Years
Audiometric Testing Records 10 Years
Training Records Duration of Employment + 2 Years
Question 1
A safety coordinator is reviewing the company's record-keeping practices. The
company has been destroying first aid records after 2 years to save storage space.
The coordinator is concerned this practice may violate OHS requirements. Based on
the table above, what is the minimum retention period for first aid records?
A) 1 year.
B) 2 years.
C) 3 years.
D) 5 years.
*Correct Answer: C [CORRECT]
Rationale: First aid records must be retained for a minimum of 3 years as per
OHS requirements. Keeping them for only 2 years is non-compliant.
Investigation reports require 2 years (B), audiometric records require 10 years,
and training records must be kept for duration of employment plus 2 years.
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Question 2
An auditor is reviewing the company's documentation and notes that investigation
reports from 2022 are still on file. The safety manager explains they keep all reports
for 3 years. Is this practice compliant, and what is the minimum requirement based
on the table?
A) Yes, because 2 years is the minimum, so 3 years is acceptable.
B) No, because the minimum is 5 years.
C) Yes, because 3 years meets the minimum requirement.
D) No, because investigation reports must be retained for 10 years.
*Correct Answer: A [CORRECT]
Rationale: Investigation reports must be retained for a minimum of 2 years.
Keeping them for 3 years exceeds the minimum and is compliant. First aid
records require 3 years (C would apply to first aid), and audiometric records
require 10 years (D).
Question 3
A safety manager is preparing for a COR audit and wants to ensure the company's
Health and Safety Management System (HSMS) is complete. The manager explains to
the team that an HSMS is a comprehensive system that maintains high standards
throughout every part of the organization. What is the primary purpose of an HSMS?
A) To reduce insurance premiums.
B) To ensure compliance with all OHS regulations and continuously improve safety
performance.
C) To provide a framework for employee discipline.
D) To replace the need for workplace inspections.
*Correct Answer: B [CORRECT]
Rationale: The primary purpose of an HSMS is to ensure compliance with OHS
regulations and drive continuous improvement in safety performance. While
insurance premiums (A) may be affected, that is not the purpose. Discipline (C)
and replacing inspections (D) are not purposes of an HSMS.
Question 4
A site supervisor is reviewing the hierarchy of controls before starting a new task that
involves working at height. The supervisor wants to implement the most effective
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control first. According to the hierarchy of controls, which action should the
supervisor take?
A) Require all workers to wear fall protection harnesses.
B) Conduct daily toolbox talks on fall prevention.
C) Redesign the work so it can be performed from the ground.
D) Install guardrails around the work area.
*Correct Answer: C [CORRECT]
Rationale: Elimination is the most effective control in the hierarchy—removing
the need to work at height eliminates the fall hazard entirely. Guardrails (D)
are engineering controls. Harnesses (A) are PPE, and toolbox talks (B) are
administrative controls—both are less effective.
Question 5
A safety officer is calculating the company's Lost Time Frequency Rate (LTFR) for the
annual report. The company had 4 lost time cases during the year. Total employee
hours of exposure were 800,000 hours. What is the company's LTFR?
A) 0.5
B) 1.0
C) 1.5
D) 2.0
*Correct Answer: B [CORRECT]
Rationale: LTFR = (Lost time cases × 200,000) / Total Employee Hours of
Exposure = (4 × 200,000) / 800,000 = 1.0.
Question 6
A supervisor is explaining the three basic rights of workers to a new employee. The
employee asks what the right to refuse means. What is the correct description of the
right to refuse?
A) Workers can refuse any task they do not want to do.
B) Workers can refuse work they have reasonable grounds to believe is dangerous.
C) Workers can refuse to wear personal protective equipment.
D) Workers can refuse to work overtime.
*Correct Answer: B [CORRECT]
Rationale: The right to refuse applies to work that a worker has reasonable
,2|Page
NCSO Exam Prep 2026/2027: Essential
Practice Tests for Safety Professionals |
Ace the ACSA Construction Safety Officer
Exam
Visual 1 (Refer to this for Questions 1-2)
Table 1: OHS Record Retention Requirements
Record Type Minimum Retention Period
First Aid Records 3 Years
Investigation Reports 2 Years
Audiometric Testing Records 10 Years
Training Records Duration of Employment + 2 Years
Question 1
A safety coordinator is reviewing the company's record-keeping practices. The
company has been destroying first aid records after 2 years to save storage space.
The coordinator is concerned this practice may violate OHS requirements. Based on
the table above, what is the minimum retention period for first aid records?
A) 1 year.
B) 2 years.
C) 3 years.
D) 5 years.
*Correct Answer: C [CORRECT]
Rationale: First aid records must be retained for a minimum of 3 years as per
OHS requirements. Keeping them for only 2 years is non-compliant.
Investigation reports require 2 years (B), audiometric records require 10 years,
and training records must be kept for duration of employment plus 2 years.
,3|Page
Question 2
An auditor is reviewing the company's documentation and notes that investigation
reports from 2022 are still on file. The safety manager explains they keep all reports
for 3 years. Is this practice compliant, and what is the minimum requirement based
on the table?
A) Yes, because 2 years is the minimum, so 3 years is acceptable.
B) No, because the minimum is 5 years.
C) Yes, because 3 years meets the minimum requirement.
D) No, because investigation reports must be retained for 10 years.
*Correct Answer: A [CORRECT]
Rationale: Investigation reports must be retained for a minimum of 2 years.
Keeping them for 3 years exceeds the minimum and is compliant. First aid
records require 3 years (C would apply to first aid), and audiometric records
require 10 years (D).
Question 3
A safety manager is preparing for a COR audit and wants to ensure the company's
Health and Safety Management System (HSMS) is complete. The manager explains to
the team that an HSMS is a comprehensive system that maintains high standards
throughout every part of the organization. What is the primary purpose of an HSMS?
A) To reduce insurance premiums.
B) To ensure compliance with all OHS regulations and continuously improve safety
performance.
C) To provide a framework for employee discipline.
D) To replace the need for workplace inspections.
*Correct Answer: B [CORRECT]
Rationale: The primary purpose of an HSMS is to ensure compliance with OHS
regulations and drive continuous improvement in safety performance. While
insurance premiums (A) may be affected, that is not the purpose. Discipline (C)
and replacing inspections (D) are not purposes of an HSMS.
Question 4
A site supervisor is reviewing the hierarchy of controls before starting a new task that
involves working at height. The supervisor wants to implement the most effective
, 4|Page
control first. According to the hierarchy of controls, which action should the
supervisor take?
A) Require all workers to wear fall protection harnesses.
B) Conduct daily toolbox talks on fall prevention.
C) Redesign the work so it can be performed from the ground.
D) Install guardrails around the work area.
*Correct Answer: C [CORRECT]
Rationale: Elimination is the most effective control in the hierarchy—removing
the need to work at height eliminates the fall hazard entirely. Guardrails (D)
are engineering controls. Harnesses (A) are PPE, and toolbox talks (B) are
administrative controls—both are less effective.
Question 5
A safety officer is calculating the company's Lost Time Frequency Rate (LTFR) for the
annual report. The company had 4 lost time cases during the year. Total employee
hours of exposure were 800,000 hours. What is the company's LTFR?
A) 0.5
B) 1.0
C) 1.5
D) 2.0
*Correct Answer: B [CORRECT]
Rationale: LTFR = (Lost time cases × 200,000) / Total Employee Hours of
Exposure = (4 × 200,000) / 800,000 = 1.0.
Question 6
A supervisor is explaining the three basic rights of workers to a new employee. The
employee asks what the right to refuse means. What is the correct description of the
right to refuse?
A) Workers can refuse any task they do not want to do.
B) Workers can refuse work they have reasonable grounds to believe is dangerous.
C) Workers can refuse to wear personal protective equipment.
D) Workers can refuse to work overtime.
*Correct Answer: B [CORRECT]
Rationale: The right to refuse applies to work that a worker has reasonable
