CITB Test Topics: The Five Operatives Knowledge Areas

The CITB Operatives test is organised around five knowledge areas: working environment, occupational health, safety, high-risk activities and specialist. CITB lists these labels publicly. CITB's official revision materials, including a demo and sample questions, are the official practice route. This site does not reproduce them. The sensible way to prepare is to understand the topics rather than hunt for answers. This guide describes each area in plain English and points to the HSE construction guidance that sits behind it. The descriptions are this site's own wording, not CITB's, so always compare them with the official Operatives test page.

Key takeaways

What the five knowledge areas are

A knowledge area is a heading that groups related subjects. It is not a list of questions and it does not tell you how many questions come from each heading. Treat the labels as a map of what to revise, not as a blueprint of the paper.

The table below gives a plain-English reading of each label and the kind of HSE material that relates to it. The "look for" column is a study aid, not a statement of what CITB asks.

The last row is deliberately cautious. The label "specialist" is public, but this guide does not guess at its detailed contents. If you are unsure which subjects fall under it, read the CITB Operatives page and ask the body you are booking through.

Working environment and occupational health

Working environment

Think about everything around your task. Is the walkway clear? Are welfare facilities available and clean? Are other trades working above or beside you? Are materials stored so they will not fall, spill or block an escape route? These everyday questions belong under the heading of the working environment, along with the idea that construction work has an effect on the surroundings as well as the people in them.

Occupational health

Occupational health is about harm that develops gradually. A single day of exposure may feel harmless, but years of it can do lasting damage. The same pattern applies to vibration from tools and repetitive lifting.

The key idea for revision is prevention before symptoms. The right response is rarely to wait and see how you feel. It is to use the controls provided, such as protective equipment that fits and is worn properly, rotation of tasks and safe lifting methods. When a scenario describes a worker who "feels fine", the safest answer still follows the control that prevents later harm.

Safety and high-risk activities

Safety

The safety area is the broadest. It covers recognising hazards, following the controls that have been put in place, and knowing what to do when something goes wrong. Typical themes include using the correct protective equipment, understanding signs and instructions, keeping tools and equipment in a safe condition, and reporting problems rather than ignoring them.

A habit that helps in any scenario is to separate the hazard (the thing that could cause harm) from the risk (how likely it is and how serious the harm could be). Once you can name both, the controls make more sense, and so does the question of who should act: you, your supervisor, or both.

High-risk activities

Some tasks carry a much higher chance of serious injury, so the rules around them are stricter and the consequences of getting them wrong are greater. Work at height, excavations, lifting operations and work near electricity are common examples used in HSE guidance. For these, expect questions to turn on planning, competence and stopping work when conditions are not safe.

Useful revision questions for any high-risk task are:

• Has the task been planned, and does the plan cover this situation?
• Am I trained and competent for this particular task?
• Is the equipment suitable, inspected and set up correctly?
• What do I do if conditions change?

Specialist topics

The public label for this area is "specialist". Because this site cannot see test content, it will not describe what the area contains. What you can do is use the label as a prompt to check three things.

1. Open the CITB Operatives test page and read how the area is described there.
2. Note any subject on that page that you have never worked with, and read the matching HSE guidance.
3. If your employer or card scheme has told you which topics matter for your role, add those to your revision list.

Your duties as a worker apply to every area

The HSE page on construction workers, roles and responsibilities explains what is expected of you on site. It says workers "must report anything they see that is likely to endanger either their own or others health and safety". Worker duties come from the Health and Safety at Work etc. Act 1974, section 7: employees must take reasonable care for their own health and safety and that of others affected by their acts or omissions, and must co-operate with the employer so far as necessary for the employer to meet a legal duty. Read the HSE page itself for the exact wording and any updates.

This is useful for revision because many scenarios, in any knowledge area, end with a question about what you should do. A good default is to stop when something is unsafe, tell the right person and follow the site's arrangements, instead of fixing a problem outside your competence or carrying on regardless.

A checklist for studying by area

• [ ] Read the CITB Operatives test page and note the five area labels.
• [ ] Write the five labels on a sheet and list the subjects you already know under each.
• [ ] Mark the subjects you have never worked with and read the HSE guidance for them.
• [ ] Read the HSE roles and responsibilities page for workers.
• [ ] Practise questions from every area, not only your own trade.
• [ ] Keep a mistakes list sorted by area and review it before each session.
• [ ] Use the site's safety guides and glossary for terms you do not recognise.
• [ ] Try the free practice questions under time, and check the Operatives test format page for the numbers.

Practice check

These two questions are original and are not taken from any official test. Practice is not an official result.

Question 1. A worker has been using a noisy tool for several days and says they feel fine. What is the best response?

• A. Carry on, because there are no symptoms
• B. Use the controls provided, such as hearing protection, because noise harm builds up over time
• C. Stop wearing protection to avoid dulling their hearing
• D. Ask others to work nearer so the noise is shared

Answer: B. Occupational health harm often appears long after exposure, so controls are used before symptoms show.

Question 2. Conditions change halfway through a high-risk task and the plan no longer fits. What should you do?

• A. Carry on and adjust as you go
• B. Wait until the end of the shift to mention it
• C. Stop, tell the right person and wait for the plan to be reviewed
• D. Ask a colleague to finish the task for you

Answer: C. When conditions change, the plan may no longer control the risk, so work stops until it has been reviewed.

FAQ

Sources

• CITB: Operatives test
• HSE: Construction safety topics
• HSE: Construction workers, roles and responsibilities
• Legislation.gov.uk: Health and Safety at Work etc. Act 1974

Independent guide, not affiliated with, authorised by, approved by or endorsed by CSCS or CITB. Last updated 2026-10-08.