Behaviour & cultureSpecialist

Modern behaviour-based safety

Why telling people to be careful rarely works, what the ABC model says about the shortcuts people take, and how to run observations that fix the work instead of blaming the worker.

6 modules + assessment45–60 minutesReviewed 28 September 2026
Behaviour-based safety poster: the five-step observation cycle (observe, record, talk, analyse, improve), the ABC model of antecedent, behaviour and consequence, and the reminder that behaviour is a symptom, not the root cause
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Module 1

The ABC model: what behaviour-based safety actually looks at

Behaviour-based safety (BBS) treats what people do at work as something you can observe, understand and influence. Not by telling them to be careful, but by changing what comes before a behaviour and what follows it. Almost every BBS programme is built on one simple model: Antecedent, Behaviour, Consequence.

Antecedents are everything that comes before a behaviour and sets it up: instructions, training, signs, the layout of the work area, which tools are within reach, time pressure, what the supervisor said at the start of the shift. They start a behaviour, but on their own they rarely keep it going.

The behaviour is the specific, observable thing a person actually does: clips on the harness, skips the lock, steps around the barrier. "Careless" is not a behaviour. "Reached into the running conveyor to clear a jam" is.

Consequences are what follows the behaviour, from the person's own point of view: time saved, effort avoided, praise, discomfort, a telling-off. Consequences decide whether a behaviour gets repeated, which is why a good BBS programme spends most of its effort here.

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That gap, between what people are told and what the job actually rewards, is what the rest of this course is about.

Sources

Sources and further reading

  1. UK HSE, Reducing error and influencing behaviour (HSG48)
  2. UK HSE, Human factors and ergonomics
  3. ISO 45001:2018, Occupational health and safety management systems

Editorial owner: HSE Hub Editorial

Last verified: 28 September 2026

Review trigger: Review after a material change to how this course frames observation programmes, consequence analysis or HOP principles, and at least annually.

Professional boundary: General education only. This course does not replace a competent person's design of a behavioural safety programme, your organisation's disciplinary and just-culture policies, or legal advice on worker consultation.