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100+ Free ISO 45001 LI Practice Questions

Pass your PECB ISO 45001 Lead Implementer exam on the first try — instant access, no signup required.

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Which version of ISO 45001 is currently in force as the international OHSMS standard?

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2026 Statistics

Key Facts: ISO 45001 LI Exam

70%

Passing Score

PECB

80

Exam Questions

3 hours

40-80 hrs

Study Time

Recommended

$1100

Exam Fee

PECB

3 years

Certification Valid

PECB

Open-book

Exam Format

PECB

ISO 45001 Lead Implementer is PECB's flagship occupational health and safety credential covering the OHSMS implementation lifecycle from project initiation through certification audit. The 3-hour exam has 80 multiple-choice questions across 7 domains and requires 70% to pass. It is open-book and validates skills in hazard ID and risk assessment, hierarchy of controls, worker participation, operational control, emergency preparedness, and incident investigation per ISO 45001:2018. The exam costs $1100 USD alone and is delivered through PECB Exams online or at authorized training partners.

Sample ISO 45001 LI Practice Questions

Try these sample questions to test your ISO 45001 LI exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the primary purpose of an Occupational Health and Safety Management System (OHSMS) under ISO 45001?
A.To replace national OH&S legislation
B.To provide a framework for managing OH&S risks and opportunities to prevent work-related injury and ill-health
C.To eliminate the need for workers' compensation insurance
D.To certify individual workers as safety professionals
Explanation: ISO 45001:2018 defines the OHSMS as a framework to manage OH&S risks and opportunities, prevent work-related injury and ill-health, and provide safe and healthy workplaces. It complements (does not replace) legal requirements and does not certify individuals.
2Which version of ISO 45001 is currently in force as the international OHSMS standard?
A.ISO 45001:2015
B.ISO 45001:2018
C.ISO 45001:2021
D.ISO 45001:2022
Explanation: ISO 45001:2018 (Occupational health and safety management systems — Requirements with guidance for use) is the current edition. It was published in March 2018 and replaced OHSAS 18001:2007 over a three-year migration period that closed in March 2021.
3Which standard did ISO 45001 replace?
A.ISO 9001
B.OHSAS 18001
C.ISO 14001
D.ANSI Z10
Explanation: ISO 45001 replaced OHSAS 18001:2007, the British Standards Institution specification that was the dominant OHSMS framework before ISO 45001. The migration deadline for OHSAS 18001 certified organizations was 11 March 2021.
4What is the difference between a hazard and a risk under ISO 45001?
A.They are synonyms
B.A hazard is the combination of likelihood and severity; a risk is the source of potential harm
C.A hazard is a source with potential to cause harm; a risk is the combination of likelihood and severity of harm
D.A risk is always physical; a hazard is always psychological
Explanation: ISO 45001 defines a hazard as a source with potential to cause injury and ill-health, and OH&S risk as the combination of the likelihood of occurrence and the severity of consequences. Hazard identification (Clause 6.1.2.1) precedes risk assessment (Clause 6.1.2.2).
5Which Annex SL clause of ISO 45001:2018 covers Context of the Organization?
A.Clause 4
B.Clause 5
C.Clause 6
D.Clause 8
Explanation: Clause 4 (Context of the organization) addresses understanding the organization and its context, interested parties (including workers and other parties), OHSMS scope, and the OHSMS itself. It mirrors the Annex SL Clause 4 used across all ISO management system standards.
6Which clause of ISO 45001 covers Leadership and Worker Participation?
A.Clause 4
B.Clause 5
C.Clause 6
D.Clause 7
Explanation: Clause 5 (Leadership and worker participation) covers top management commitment (5.1), OH&S policy (5.2), organizational roles, responsibilities and authorities (5.3), and consultation and participation of workers (5.4). The explicit naming of worker participation in the clause title differentiates ISO 45001 from OHSAS 18001.
7Which clause contains the operational requirements including operational planning and control, management of change, procurement, contractors, and emergency preparedness?
A.Clause 6
B.Clause 7
C.Clause 8
D.Clause 9
Explanation: Clause 8 (Operation) contains operational planning and control (8.1), hierarchy of controls (8.1.2), management of change (8.1.3), outsourcing (8.1.4.1), procurement (8.1.4.2), contractors (8.1.4.3), and emergency preparedness and response (8.2). It is the largest implementation clause.
8What is the correct order of the hierarchy of controls under ISO 45001 (most effective to least effective)?
A.PPE > Administrative > Engineering > Substitution > Elimination
B.Elimination > Substitution > Engineering Controls > Administrative Controls > PPE
C.Engineering > Elimination > Substitution > PPE > Administrative
D.Substitution > Elimination > PPE > Engineering > Administrative
Explanation: ISO 45001 Clause 8.1.2 prescribes the hierarchy of controls in this exact order: (1) Elimination, (2) Substitution, (3) Engineering controls and reorganization of work, (4) Administrative controls including training, and (5) PPE. PPE is the last line of defence — never the first.
9Which clause of ISO 45001 addresses internal audit?
A.8.2
B.9.2
C.10.2
D.7.5
Explanation: Clause 9.2 (Internal audit) requires the organization to conduct internal audits at planned intervals to provide information on whether the OHSMS conforms to the organization's own requirements and to the standard, and is effectively implemented and maintained.
10Which clause covers management review of the OHSMS?
A.9.1
B.9.2
C.9.3
D.10.2
Explanation: Clause 9.3 (Management review) requires top management to review the OHSMS at planned intervals to ensure its continuing suitability, adequacy, and effectiveness. Required inputs include audit results, incident statistics, consultation outcomes, and OH&S performance.

About the ISO 45001 LI Exam

PECB's Lead Implementer credential validates the competence to plan, implement, manage, monitor, and maintain an Occupational Health and Safety Management System (OHSMS) based on ISO 45001:2018. The exam covers OH&S terminology, the transition from OHSAS 18001, ISO 45001 Clauses 4-10, hazard identification and risk assessment, the hierarchy of controls, worker consultation and participation, operational control (MOC, permits-to-work, contractor management), emergency preparedness, incident investigation, OH&S performance indicators (TRIR/LTIR/DART), and the path from implementation to certification audit.

Questions

80 scored questions

Time Limit

180 minutes

Passing Score

70%

Exam Fee

$1100 USD (PECB)

ISO 45001 LI Exam Content Outline

12%

Fundamental OH&S Principles and Concepts

OH&S terminology, hazard vs risk, OHSAS 18001 to ISO 45001 transition, and worker participation

13%

Occupational Health and Safety Management System

ISO 45001:2018 Clauses 4-10, Annex SL structure, and OHSMS components

20%

Planning an OHSMS Implementation

Project initiation, scope, leadership, OH&S policy, OH&S objectives, and roadmap

25%

Implementing an OHSMS

Hazard ID, risk assessment, hierarchy of controls, emergency preparedness, awareness, and training

15%

Monitoring, Measurement, and Improvement

Performance indicators, incident investigation, internal audit, management review, and corrective action

10%

Closing the Implementation Project

Final project documentation, lessons learned, and certification audit preparation

5%

Managing an OH&S Programme

Long-term OHSMS operation, governance, and continual improvement

How to Pass the ISO 45001 LI Exam

What You Need to Know

  • Passing score: 70%
  • Exam length: 80 questions
  • Time limit: 180 minutes
  • Exam fee: $1100 USD

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

ISO 45001 LI Study Tips from Top Performers

1Memorise the hierarchy of controls in exact order: Elimination > Substitution > Engineering Controls > Administrative Controls > PPE — PPE is the least effective and should never be the first choice when higher-tier controls are feasible
2Practice mapping OHSMS activities to Annex SL clauses (4-10) — questions often ask which clause governs a specific activity (e.g., management review = 9.3, internal audit = 9.2, worker consultation = 5.4)
3Distinguish hazard from risk — a hazard is a source of potential harm; risk is the combination of likelihood and severity of harm. ISO 45001 requires both hazard identification (6.1.2.1) and OH&S risk assessment (6.1.2.2)
4Know the seven OH&S policy commitments in Clause 5.2 — safe and healthy conditions, eliminate hazards and reduce risks, comply with legal requirements, consult workers, framework for objectives, continual improvement, and fulfil OH&S obligations
5Distinguish leading indicators (training hours, near-miss reports, audit findings, inspections completed) from lagging indicators (TRIR, LTIR, DART, fatalities) — strong OHSMS programmes are heavy on leading indicators
6Use our AI tutor to walk through ISO 45001 Clause 8 (Operation) — it contains operational control, MOC, procurement, contractors, and emergency preparedness, and is the most heavily weighted exam domain

Frequently Asked Questions

What is the PECB ISO 45001 Lead Implementer exam?

The PECB ISO 45001 Lead Implementer exam validates your competence to plan, implement, manage, monitor, and maintain an Occupational Health and Safety Management System (OHSMS) based on ISO 45001:2018. It is a 3-hour, 80-question multiple-choice exam covering 7 domains, requires 70% to pass, and is open-book — candidates may bring the ISO 45001 standard, course materials, and personal notes.

How hard is the ISO 45001 Lead Implementer exam?

The exam is considered advanced. While it is open-book, the breadth of ISO 45001 Clauses 4-10, the precision required for hazard identification and risk assessment methodologies, and application-level questions on operational control, the hierarchy of controls, and incident investigation demand 40-80 hours of focused study. Candidates without OH&S experience should plan for the higher end of that range.

What jobs can I get with ISO 45001 Lead Implementer certification?

ISO 45001 LI is recognized for roles including: OH&S Manager ($80-125K), OHSMS Implementation Consultant ($95-145K), Health and Safety Lead ($75-115K), HSE Specialist ($70-110K), and Safety Programme Coordinator ($65-95K). The credential is widely accepted across construction, manufacturing, oil and gas, healthcare, and logistics sectors that pursue ISO 45001 certification.

Is ISO 45001 Lead Implementer worth it in 2026?

Yes — ISO 45001 fully replaced OHSAS 18001 in March 2021 and has become the dominant international OH&S standard for organizations seeking third-party certification. Tightening regulatory expectations in the EU, UK, US (OSHA), and Australia have made formal OHSMS competence a hiring priority. PECB's Lead Implementer is the most portable credential demonstrating you can build an OHSMS from scratch and prepare an organization for certification audit.

What is the difference between ISO 45001 Lead Implementer and Lead Auditor?

Lead Implementer focuses on building and operating an OHSMS — identifying hazards, assessing risks, designing controls per the hierarchy, drafting OH&S procedures, and running emergency drills. Lead Auditor focuses on independently auditing an existing OHSMS against ISO 45001 using ISO 19011 audit methodology. Many practitioners hold both credentials, but Lead Implementer is more useful for in-house safety managers, while Lead Auditor is geared toward consultants and certification body auditors.