ACSA NCSO Exam Questions and Verified
Answers | Complete and Accurate!
(2025/2026)
Section 1: Introduction
This document provides a complete and verified set of 50 questions and answers for the
Alberta Construction Safety Association (ACSA) National Construction Safety Officer
(NCSO) Exam, updated for the 2025/2026 testing cycle. It covers key topics including
construction safety, hazard identification, Occupational Health and Safety (OH&S)
regulations, emergency procedures, and site-specific protocols. Designed for candidates
seeking certification success, this resource ensures reliable accuracy and alignment with the
exam structure.
Section 2: Exam Questions and Answers
1. What is the primary role of a National Construction Safety Officer (NCSO) on a
construction site?
A. Operate heavy machinery
B. Administer and implement health and safety programs
C. Conduct financial audits
D. Design construction blueprints
Correct Answer: B. Administer and implement health and safety programs
Rationale: An NCSO oversees safety protocols, ensures compliance with OH&S
regulations, and reduces workplace incidents. Other options are unrelated to the
NCSO role.
2. Which regulation governs workplace safety in Alberta?
A. Canadian Criminal Code
B. Alberta Occupational Health and Safety Act
C. Environmental Protection Act
D. Workers’ Compensation Act
Correct Answer: B. Alberta Occupational Health and Safety Act
Rationale: The Alberta OH&S Act sets standards for workplace safety, including
construction sites. Other acts address different areas.
3. What is the formula for calculating the Lost Time Frequency Rate (LTFR)?
A. (Lost work days × 200,000) ÷ Total employee hours
B. (Lost time cases × 200,000) ÷ Total employee hours
C. (Medical aids × 200,000) ÷ Total employee hours
D. (Total incidents × 200,000) ÷ Total employee hours
Correct Answer: B. (Lost time cases × 200,000) ÷ Total employee hours
Rationale: LTFR measures the frequency of lost time injuries, using lost time cases
multiplied by 200,000 divided by total hours worked.
4. Which of the following is a leading indicator of safety performance?
A. Number of workplace injuries
B. Completion of hazard assessments
, C. Lost time incidents
D. Workers’ compensation claims
Correct Answer: B. Completion of hazard assessments
Rationale: Leading indicators, like hazard assessments, predict and prevent incidents.
Injuries, lost time, and claims are lagging indicators.
5. What is the minimum field experience required to achieve the NCSO designation?
A. 1 year
B. 2 years
C. 3 years
D. 5 years
Correct Answer: C. 3 years
Rationale: The NCSO designation requires at least 3 years of construction field
experience, verified by employer letters.
6. Which personal protective equipment (PPE) is mandatory for all workers on a
construction site?
A. Hearing protection
B. Hard hat
C. Respirator
D. Welding shield
Correct Answer: B. Hard hat
Rationale: Hard hats are universally required to protect against falling objects. Other
PPE depends on specific hazards.
7. What is the purpose of a Certificate of Recognition (COR) audit?
A. To certify equipment safety
B. To evaluate a company’s health and safety management system
C. To train new employees
D. To issue worker certifications
Correct Answer: B. To evaluate a company’s health and safety management
system
Rationale: A COR audit assesses the effectiveness of a company’s safety program to
ensure compliance and reduce risks.
8. Which validation technique is used during a safety audit?
A. Prescribing corrective actions
B. Conducting worker interviews
C. Ignoring minor hazards
D. Limiting documentation review
Correct Answer: B. Conducting worker interviews
Rationale: Interviews, along with documentation and observations, validate audit
findings by gathering worker insights.
9. What should a prime contractor monitor to ensure subcontractor safety compliance?
A. Employee vacation schedules
B. Safety training records
C. Project budget reports
D. Material delivery timelines
Correct Answer: B. Safety training records
Rationale: Monitoring training records ensures subcontractors meet safety
requirements. Other options are unrelated to safety.
10. Which hazard control method is most effective according to the hierarchy of controls?
A. Personal protective equipment
B. Administrative controls
Answers | Complete and Accurate!
(2025/2026)
Section 1: Introduction
This document provides a complete and verified set of 50 questions and answers for the
Alberta Construction Safety Association (ACSA) National Construction Safety Officer
(NCSO) Exam, updated for the 2025/2026 testing cycle. It covers key topics including
construction safety, hazard identification, Occupational Health and Safety (OH&S)
regulations, emergency procedures, and site-specific protocols. Designed for candidates
seeking certification success, this resource ensures reliable accuracy and alignment with the
exam structure.
Section 2: Exam Questions and Answers
1. What is the primary role of a National Construction Safety Officer (NCSO) on a
construction site?
A. Operate heavy machinery
B. Administer and implement health and safety programs
C. Conduct financial audits
D. Design construction blueprints
Correct Answer: B. Administer and implement health and safety programs
Rationale: An NCSO oversees safety protocols, ensures compliance with OH&S
regulations, and reduces workplace incidents. Other options are unrelated to the
NCSO role.
2. Which regulation governs workplace safety in Alberta?
A. Canadian Criminal Code
B. Alberta Occupational Health and Safety Act
C. Environmental Protection Act
D. Workers’ Compensation Act
Correct Answer: B. Alberta Occupational Health and Safety Act
Rationale: The Alberta OH&S Act sets standards for workplace safety, including
construction sites. Other acts address different areas.
3. What is the formula for calculating the Lost Time Frequency Rate (LTFR)?
A. (Lost work days × 200,000) ÷ Total employee hours
B. (Lost time cases × 200,000) ÷ Total employee hours
C. (Medical aids × 200,000) ÷ Total employee hours
D. (Total incidents × 200,000) ÷ Total employee hours
Correct Answer: B. (Lost time cases × 200,000) ÷ Total employee hours
Rationale: LTFR measures the frequency of lost time injuries, using lost time cases
multiplied by 200,000 divided by total hours worked.
4. Which of the following is a leading indicator of safety performance?
A. Number of workplace injuries
B. Completion of hazard assessments
, C. Lost time incidents
D. Workers’ compensation claims
Correct Answer: B. Completion of hazard assessments
Rationale: Leading indicators, like hazard assessments, predict and prevent incidents.
Injuries, lost time, and claims are lagging indicators.
5. What is the minimum field experience required to achieve the NCSO designation?
A. 1 year
B. 2 years
C. 3 years
D. 5 years
Correct Answer: C. 3 years
Rationale: The NCSO designation requires at least 3 years of construction field
experience, verified by employer letters.
6. Which personal protective equipment (PPE) is mandatory for all workers on a
construction site?
A. Hearing protection
B. Hard hat
C. Respirator
D. Welding shield
Correct Answer: B. Hard hat
Rationale: Hard hats are universally required to protect against falling objects. Other
PPE depends on specific hazards.
7. What is the purpose of a Certificate of Recognition (COR) audit?
A. To certify equipment safety
B. To evaluate a company’s health and safety management system
C. To train new employees
D. To issue worker certifications
Correct Answer: B. To evaluate a company’s health and safety management
system
Rationale: A COR audit assesses the effectiveness of a company’s safety program to
ensure compliance and reduce risks.
8. Which validation technique is used during a safety audit?
A. Prescribing corrective actions
B. Conducting worker interviews
C. Ignoring minor hazards
D. Limiting documentation review
Correct Answer: B. Conducting worker interviews
Rationale: Interviews, along with documentation and observations, validate audit
findings by gathering worker insights.
9. What should a prime contractor monitor to ensure subcontractor safety compliance?
A. Employee vacation schedules
B. Safety training records
C. Project budget reports
D. Material delivery timelines
Correct Answer: B. Safety training records
Rationale: Monitoring training records ensures subcontractors meet safety
requirements. Other options are unrelated to safety.
10. Which hazard control method is most effective according to the hierarchy of controls?
A. Personal protective equipment
B. Administrative controls
