Most organisations know a great deal about how work is supposed to happen.
There are procedures, standards, plans, risk assessments, training, roles and controls that describe what people should do and how work should be performed.
That knowledge matters.
But it is not the whole picture.
Work happens in changing conditions.
Equipment is unavailable. Priorities compete. Information is incomplete. People coordinate across teams. Jobs take longer than expected. Plans change. Experienced workers recognise things that were difficult to anticipate. People make decisions, solve problems and adapt.
Most of the time, they make the work succeed.
That everyday reality is one of the richest sources of information available to an organisation.
It is also one of the easiest to miss.
When work goes well, we tend to move on.
When something goes wrong, we often narrow our attention to the actions of the people closest to the outcome.
What did they do?
What did they miss?
Which procedure was not followed?
Why did they make that decision?
Those questions may identify what happened.
They do not necessarily explain why.
Human Performance widens the view.
It asks us to understand the work people were trying to accomplish, the conditions surrounding it, the information available at the time, the pressures and trade-offs involved, and why particular actions made sense in that situation.
That does not remove individual responsibility.
It does not make procedures unimportant.
And it does not mean every adaptation is acceptable.
It means that if we want to improve performance, we need to understand what shapes it.
This publication is about doing that in practice.
Not as another safety program.
Not as a collection of slogans.
And not as a new vocabulary for explaining old ideas.
It is about getting closer to the work.
Seeing more.
Asking better questions.
Learning from what normally happens.
And using that understanding to make work safer, healthier and better.
Before trying to change behaviour, understand the work in which that behaviour occurs.
How is the job actually performed?
What does it demand from people?
What changes?
What gets in the way?
What helps?
Where do people adapt?
What looks straightforward from outside the work but becomes difficult from within it?
Human Performance starts there.
Sections 01–04
Part 01 / Understand work01
Start with the work
Before asking why someone did something, understand the work they were trying to do.
When an unwanted event occurs, attention naturally moves toward the people involved.
Someone operated the equipment.
Someone made the decision.
Someone missed the signal.
Someone did not follow the procedure.
Someone was there.
Their actions matter.
But beginning and ending with those actions gives us a very narrow view of performance.
A person does not arrive at work and behave independently of everything around them.
They are working toward goals.
Using tools and equipment.
Interpreting information.
Following plans.
Coordinating with other people.
Responding to changing conditions.
Managing interruptions.
Balancing competing requirements.
Drawing on experience.
Making decisions with the information available at the time.
Their behaviour occurs inside work.
Human Performance starts by widening the field of view.
Instead of beginning with:
Why did they do that?
begin with:
What was happening?
What were they trying to achieve?
What did the work normally look like?
What was different?
What information was available?
What conditions shaped the decision?
What made the action reasonable at the time?
This does not make the person’s actions irrelevant.
It makes them understandable.
And understanding gives us more options for improvement than judgement alone.
FIGURE 1.1Two ways to look at the same event
PERSON-FIRST
PersonActionErrorOutcomeCorrect the person
WORK-FIRST
WorkConditionsDecisions and actionsOutcomeUnderstand and improve
SAME EVENT. WIDER FIELD OF VIEW.
A wider view produces different actions
Imagine a technician isolates the wrong item of equipment.
A narrow explanation might be:
The technician failed to identify the correct isolation point.
That may be factually accurate.
But it leaves important questions unanswered.
Were the isolation points clearly labelled?
Did two assets use similar identifiers?
Was the drawing current?
Could the isolation point be seen from the work location?
Was the technician interrupted?
Was the task different from normal?
How was isolation normally confirmed?
Had similar confusion occurred before?
Were people relying on local knowledge to distinguish between equipment?
Once those conditions become visible, the improvement options change.
The response may still include coaching or competency development.
But it might also involve equipment identification, drawings, interface design, planning, verification, access or the way the work itself is organised.
The objective is not to find a more complicated explanation.
It is to find a more useful one.
Start with the work. Then understand the action within it.
People’s actions make more sense when we understand the situation from the position they occupied before the outcome was known.
That requires us to resist hindsight, look beyond labels and understand why actions that appear unreasonable afterwards may have appeared entirely reasonable at the time.
Sections 05–08
Part 02 / Understand performance05
People make sense of the situation they are in
The outcome changes what becomes obvious.
After an event, we know what happened.
We know which signal mattered.
Which decision was important.
Which condition became critical.
Which control failed.
Which action should have been different.
The people involved did not have that view.
They were moving forward through the work.
Not backwards from the outcome.
FIGURE 5.1Before / after
BEFORE THE EVENT
Incomplete informationCompeting goalsUncertaintyNormalised conditionsTime pressurePast successMultiple possible outcomes
AFTER THE EVENT
Known outcomeComplete timelineVisible consequenceIdentified deviationsSelected evidenceClearer causal story
THE OUTCOME CHANGES WHAT BECOMES OBVIOUS.
Local rationality
People generally do things that make sense to them in the situation they are in.
That does not mean every decision is good.
It means there is usually a reason.
A driver enters an area because previous access has been permitted.
A nurse uses a workaround because the normal equipment is unavailable.
A maintenance worker begins a task because the information available indicates the isolation is complete.
A supervisor continues work because the condition has occurred many times before without consequence.
Once the outcome is known, the weaknesses can appear obvious.
Before it, they may not have been.
The task for learning is to reconstruct that earlier view.
What did they know?
What did they expect?
What had happened before?
What cues were available?
What competing goals existed?
What would another person with similar experience reasonably have done?
Error tells us something happened. It does not yet tell us why.
Some explanations stop just as the useful investigation should begin.
Human error.
Poor judgement.
Complacency.
Failure to follow procedure.
Lack of attention.
Communication failure.
These descriptions may identify something real.
But they often rename the behaviour rather than explain it.
FIGURE 6.1Stopping too early
FAILED TO FOLLOW PROCEDURE
WHY?
Procedure difficult to applyWork had changedInformation unavailableGoal conflictEquipment constraintNormal local adaptationDifferent understandingUnexpected conditionDeliberate choice
THE LABEL MAY DESCRIBE THE ACTION. IT DOES NOT EXPLAIN THE WORK.
Keep going
If someone did not follow a procedure, understand why.
Was the procedure known?
Was it available?
Was it understandable?
Did it fit the task?
Was the required equipment available?
Did experienced workers normally perform the work differently?
Was there a competing requirement?
Was the deviation deliberate?
What benefit did the alternative provide?
What risk did the person believe they were taking?
This is not an exercise in finding a system explanation for every action.
Sometimes the answer may be straightforward.
A person understood the requirement, had reasonable conditions to meet it, understood the potential consequence and deliberately chose otherwise.
That matters.
But we should arrive at that conclusion through understanding, not assumption.
The response to failure shapes what the organisation will learn next.
People pay attention to what happens after bad news.
If reporting difficulty leads to blame, people learn to be careful about what they report.
If admitting uncertainty damages reputation, certainty increases.
If raising a workaround creates trouble for the person who describes it, workarounds become harder to see.
The organisational response therefore affects future visibility.
But learning does not require the removal of accountability.
A mature response can hold both.
FIGURE 13.1Before judging the action
WHAT HAPPENED?
WHAT WAS INTENDED?
WHAT DID THE PERSON KNOW AT THE TIME?
WHAT CONDITIONS SHAPED THE ACTION?
WHY DID IT MAKE SENSE?
WAS THE BEHAVIOUR REASONABLE?
WHAT RESPONSE IS APPROPRIATE?
Accountability needs context
Different situations warrant different responses.
An unintended mistake is not the same as a deliberate act.
A reasonable adaptation under difficult conditions is not the same as knowingly exposing others to serious harm.
A person working within an accepted local practice is not in the same position as someone deliberately bypassing a clear and workable requirement for personal convenience.
Intent matters.
Capability matters.
Foreseeability matters.
The quality of the system matters.
The conditions matter.
The potential for harm matters.
Human Performance should improve the quality of accountability.
Not remove it.
A useful response asks both:
What should we learn about the system?
and:
What is a fair and appropriate response to the behaviour?
The strongest improvements change the conditions around performance.
Many corrective-action systems repeatedly produce the same responses.
Retrain.
Remind.
Communicate.
Update the procedure.
Add a warning.
Tell people to be more careful.
Sometimes those are exactly the right actions.
Often they are not enough.
If the problem was created by equipment design, another briefing will not redesign the equipment.
If two goals conflict, retraining does not remove the conflict.
If information arrives too late, a reminder does not make it arrive earlier.
If the task routinely requires a workaround, rewriting the procedure without changing the work may simply create a newer procedure that people still cannot use.
An organisation can run Learning Teams, conduct field interactions, teach Human Performance principles and collect hundreds of operational insights without materially changing the work.
Learning activity is not the same as improvement.
Eventually, something needs to change.
FIGURE 16.1From signal to improvement
NOTICE
Something worth understanding becomes visible.
EXPLORE
Get closer to the work.
UNDERSTAND
Identify the conditions and interactions that matter.
ACT
Make a proportionate improvement.
CHECK
Did the change help?
LEARN
What does this tell us about other work?
Close the learning loop
People who contribute operational knowledge should be able to see what happened because they spoke.
Not every suggestion will be adopted.
Not every issue can be solved immediately.
But silence after consultation teaches people something too.
It teaches them that sharing information changes little.
Good learning systems create feedback.
What did we hear?
What did we decide?
What changed?
What could not change?
Why?
Did the improvement work?
Where else might this matter?
That is how learning becomes organisational capability rather than a series of good conversations.