IOSH Study Guide 2026

Everything you need to pass the IOSH exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.

📋 IOSH Exam Format at a Glance

30
Questions
45 min
Time Limit
60%
Passing Score

📚 IOSH Topics to Study (75)

✍️ Sample IOSH Questions & Answers

1. What is the role of fire wardens (or fire marshals) during an evacuation?
To assist evacuation of their designated area, check rooms are clear, direct people to exits, assist those with PEEPs, and report to the assembly point

Fire wardens are responsible for: initiating evacuation of their zone, checking that all areas (rooms, toilets, rest areas) are clear, directing people to the nearest exit, assisting anyone with a PEEP, ensuring fire doors are closed, reporting to the assembly point coordinator, and confirming their area is clear.

2. How should the cost-benefit of recommended control measures be considered?
By considering whether the cost and effort of the control measure is proportionate to the risk reduction achieved

While safety must not be compromised on cost grounds for significant risks, recommendations should be proportionate. The concept of 'reasonably practicable' requires weighing the cost against the degree of risk. Low-cost, high-impact measures are particularly valuable.

3. What are the key regulations made under the HSWA 1974 that managers should know?
Management of Health and Safety at Work Regulations 1999, Workplace Regulations 1992, PUWER 1998, and others

Key regulations include: Management of Health and Safety at Work Regulations 1999 (risk assessment), Workplace Regulations 1992 (welfare), PUWER 1998 (equipment), Manual Handling 1992, DSE 1992, COSHH 2002, PPE Regulations, and RIDDOR 2013.

4. What duties does the Management of Health and Safety at Work Regulations 1999 impose?
Risk assessment, competent assistance, emergency procedures, information, training, and cooperation

The Management Regulations 1999 require: suitable and sufficient risk assessments, appointment of competent persons, emergency procedures, provision of information and training, health surveillance where needed, cooperation between employers sharing a workplace, and protection of young persons.

5. What does 'so far as is reasonably practicable' (SFAIRP) mean in health and safety?
The cost and effort of reducing a risk must be weighed against the degree of risk

SFAIRP means that the duty holder must weigh the risk against the sacrifice (time, cost, effort) needed to avert it. If the risk is significant compared to the cost of control, the measures must be implemented.

6. What is the 'accident ratio' concept (Heinrich's ratio)?
The theory that for every serious injury there are many minor injuries and even more near-misses and unsafe acts

Heinrich proposed that for every major injury there are approximately 29 minor injuries and 300 near-misses/unsafe acts. While the exact numbers are debated, the principle is important: addressing the base of the triangle (near-misses and unsafe behaviours) reduces serious incidents.

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IOSH Study Guide 2026 — Exam Format, Topics & Practice Questions