A – Antecedent (preceding cue or situation)
What happens immediately before a behaviour? It could be an instruction, a sign, a routine, or simply a situation in which a person is faced with a choice. For example: An employee is faced with the choice of whether or not to put on fall protection before performing an upcoming task.

B – Behaviour (what is done or said)
The actual behavior the person exhibits. What we can observe. In the example above: the person puts on the fall protection—or chooses not to.

C – Consequence (what happens immediately after the behaviour)
The consequences determine whether a behaviour will occur more or less frequently in the future. If the behaviour leads to positive feedback, a simplified workflow, or a sense of security, then it is reinforced.

People are driven by consequences—what truly shapes behaviour is not what wesayshould be done (A), but whatactually happens afterward(C). We quickly learn which behaviours “pay off” in everyday life.

In the context of safety work, this means that we must:

  • Identify obstacles or negative consequences that stand in the way of doing the right thing
  • Make sure that safe behaviours lead to positive, tangible consequences
  • Avoid unintentionally rewarding risky behaviour, such as by moving faster or skipping uncomfortable parts

By working with the ABC model, we can clearly see why a behaviour occurs and what we can change to promote safe behaviours. It gives us a concrete roadmap to follow as we work to build and maintain a strong safety culture.