IOSH Working Safely Syllabus Explained: All 5 Modules, in Plain English

What the IOSH Working Safely syllabus and course content actually cover

The IOSH Working Safely syllabus was written by the Institution of Occupational Safety and Health — the professional body for health and safety in the UK — and is delivered by approved training providers like KeyOstas. It’s a five-module, one-day course that fits a standard working day of roughly six to seven hours of content plus breaks.

Unlike some safety courses that assume you’ve already met the Health and Safety at Work Act and know your way around a risk assessment, Working Safely is designed for people who have never been on a safety course in their lives. It’s plain-English, practical, and pitched so a new starter, an experienced operator, or an office worker can all walk out of the room with the same useful baseline.

This article walks through each of the five modules, what’s covered, and what delegates actually leave knowing.

A note on timings: IOSH prescribes the total course length, not the duration of each module. The per-module timings below reflect how KeyOstas typically paces the day — your trainer will adjust to the pace of the group.

Module 1 — Introducing Working Safely

Roughly 45 minutes

The opening module does two things: it sets out why safety matters, and it makes the case that every person in a workplace has a role in it — not just the safety officer.

What’s covered:

  • The real cost of getting safety wrong — not just the human cost, but the financial and reputational cost to the business and the legal cost to the individual.
  • A straightforward introduction to the main pieces of UK health and safety law every worker comes into contact with: the Health and Safety at Work Act 1974 (HSWA), the Management of Health and Safety at Work Regulations 1999, and the idea of “reasonable practicability”.
  • The employer’s duties, the employee’s duties, and where the two overlap.
  • Why a “safety culture” isn’t a poster on the wall — it’s a set of behaviours you can see on any site within ten minutes.

Delegates leave this module understanding that safety isn’t paperwork, and that they are legally protected, legally responsible, and genuinely able to improve what happens in their own team.

Module 2 — Defining Hazard and Risk

Roughly 60 minutes

This is the conceptual backbone of the course. If delegates only remember one thing from the day, it should be the difference between a hazard and a risk — because every other module builds on that distinction.

What’s covered:

  • Hazard — something with the potential to cause harm (a trailing cable, a chemical, a heavy load, a stressed colleague).
  • Risk — the likelihood of that hazard actually causing harm, combined with how serious the harm would be.
  • The hierarchy of control, from most effective to least: eliminate the hazard, substitute it with something safer, engineer it out (guards, ventilation), administrative controls (rules, signs, rotas), PPE as the last line of defence.
  • Why PPE alone is never enough — a principle that surprises a lot of delegates who assumed a hi-vis and a hard hat were the answer.
  • Everyday examples of how this framework applies to real tasks delegates do.

By the end of Module 2 delegates can take any task in their own job and sketch a rough risk assessment in their head — not a formal one, but enough to spot when something needs stopping.

Module 3 — Identifying Common Hazards

Roughly 90 minutes — the longest module

This is the most practical module of the course. Working Safely covers six broad categories of workplace hazard, with examples pitched to be recognisable across industries.

What’s covered:

  1. Physical hazards — slips, trips, falls, working at height, moving machinery, vehicles, electricity, fire, manual handling, noise, vibration.
  2. Chemical hazards — the basics of COSHH, recognising dangerous substances, safety data sheets, exposure routes.
  3. Biological hazards — legionella, contaminated surfaces, needlestick injuries, sharps, and the relevance of basic hygiene in non-healthcare settings.
  4. Ergonomic hazards — display screen equipment, repetitive strain, poor posture, lifting, workstation setup.
  5. Psychological hazards — workload, stress, bullying, violence at work, lone working, and the impact on both mental and physical wellbeing.
  6. Environmental hazards — lighting, temperature, ventilation, housekeeping — the “background” hazards that often get ignored because they’re not dramatic.

The module is built around exercises. Delegates are shown workplace scenes or asked to describe their own and pick out hazards they can see. The hazard-spotting exercise in the end-of-day assessment is essentially this module tested — if you want to know what the exam looks like, see our breakdown of the IOSH Working Safely exam format and pass rate.

Module 4 — Improving Safety Performance

Roughly 60 minutes

Module 4 shifts from “how to recognise a problem” to “what to do about it”. This is where the course becomes genuinely practical.

What’s covered:

  • How to report a hazard or a near-miss in your own workplace — the quickest route, who to tell, why reporting small things prevents big things.
  • The difference between a near-miss, an incident, and an accident, and why near-misses are the most valuable data a safety team has.
  • RIDDOR in outline — what has to be reported to the Health and Safety Executive, when, and by whom.
  • Behavioural safety — why watching what people actually do is more useful than reading what they’re supposed to do.
  • How a single person at any level can change the tone of a team — and how safety behaviours spread.

Delegates leave this module knowing three specific things they can do in their own job when they see something unsafe, and one behaviour they can change in themselves.

Module 5 — Protecting our Environment

Roughly 45 minutes

The final module widens the lens from personal safety to environmental responsibility — a relatively recent addition to the Working Safely syllabus, reflecting the fact that most modern workplaces now have environmental policies that employees are expected to understand.

What’s covered:

  • The connection between environmental protection and workplace safety — they share the same root principles.
  • Common environmental hazards in workplaces: waste, emissions, spills, contamination, noise, single-use plastics.
  • The worker’s role in waste segregation, water and energy use, and sustainable practice.
  • A short introduction to ISO 14001 and environmental management systems, for delegates whose organisations operate under one.
  • Simple everyday behaviours that reduce environmental impact without needing a policy document.

This module is shorter and more discussion-led than the others. It rounds off the day by pointing out that the same hazard-and-risk framework used for personal safety applies to the wider environment too.

What the assessment looks like

The syllabus ends with a short end-of-day assessment, in two parts:

  • A 20-minute multiple-choice exam covering all five modules (the pass mark is 80%).
  • A 10-minute hazard-spotting exercise where delegates are shown a workplace scene and asked to identify the hazards and the controls that should be in place.

Both parts are marked on the day by the trainer. Successful delegates receive the IOSH Working Safely certificate, which is a lifetime qualification — there’s no expiry, though IOSH recommends a refresher every three years to keep knowledge current. For a deeper look at what’s tested, see IOSH Working Safely exam format and pass rate.

What a typical day looks like

Most delegates find the day runs roughly like this:

  • 09:00 — arrival, introductions, Module 1
  • 10:00 — break, Module 2
  • 11:15 — Module 3 (part 1)
  • 12:30 — lunch
  • 13:15 — Module 3 (part 2), Module 4
  • 14:45 — break, Module 5
  • 15:45 — assessment (30 minutes total)
  • 16:15 — marking, certificate hand-out, finish

Net tutor-delivered content is roughly six to seven hours, with the remaining time taken up by breaks, lunch, and the end-of-day assessment. Timings shift slightly for in-company delivery (to fit around shift patterns) and for virtual classroom delivery (to add short breaks every hour for screen fatigue).

Frequently asked questions

Is the syllabus the same for in-person and virtual delivery?

Yes. The five modules, the assessment, and the certificate are identical. The only difference is the room. For a full comparison of the two formats see our virtual vs in-company IOSH training guide.

Are there pre-course materials to read?

No. Working Safely is designed to assume no prior knowledge. Everything is covered on the day.

What format are the training materials?

Delegates receive a printed or digital workbook that maps to the five modules. It includes summaries, exercises, and space for notes, and is useful as a reference afterwards.

Can the syllabus be customised to our industry?

The core syllabus is fixed — IOSH requires every approved provider to deliver the same content — but the examples and exercises can be tailored to your workplace. If you’re a manufacturer, expect manufacturing examples. If you’re an office, expect office examples.

What’s the difference between this and IOSH Managing Safely?

Different audience and different depth. Working Safely is for every employee, one day, awareness-level. Managing Safely is for supervisors and managers, three days, with practical risk-assessment skills. See our IOSH Working Safely vs Managing Safely comparison for the full breakdown.

Book the course

If the syllabus looks like what your team needs, you can book IOSH Working Safely as a one-day in-company course at your premises or as a live virtual classroom. Tell us your group size and location and we’ll come back with an all-inclusive fixed fee.


KeyOstas is an IOSH-approved training provider delivering this course to UK employers across construction, manufacturing, logistics, healthcare, and the public sector. All of our trainers are IOSH-registered and hold active teaching credentials.

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