10.1 Active (Proactive) vs Reactive Indicators
Key Takeaways
- Active (proactive / leading) indicators measure health and safety effort and control before harm occurs — inspections done, risk assessments current, training delivered, near-miss reports, audit actions closed.
- Reactive (lagging) indicators measure outcomes after harm or failure — injury rates, days lost, ill-health absence, RIDDOR counts, property damage.
- You need both: leading indicators show whether the system is working; lagging indicators show whether harm still occurs.
- Over-reliance on low injury rates alone is a classic trap — under-reporting, luck, or low hours worked can hide weak controls.
- Managers should track a balanced set and act on trends, not celebrate zero injuries without checking leading measures.
10.1 Active (Proactive) vs Reactive Indicators
Quick Answer: Active / proactive / leading indicators measure effort and control before harm (inspections completed, % risk assessments in date, training delivered, near-miss reports, audit actions closed). Reactive / lagging indicators measure after harm or failure (injury rates, days lost, ill-health absence, RIDDOR counts, property damage). Use both. A low injury rate alone does not prove you are safe.
Measuring performance is how managers know whether the safety management system is working in practice, not only on paper. Module Measuring Performance sits in the Check stage of Plan-Do-Check-Act (HSG65-style thinking): you planned controls, people did the work, and now you ask how do we know? Assessment questions often give a list of measures and ask which are active versus reactive, or which statement is a leading indicator.
Why measurement matters
Without measures you manage by anecdote and hope. With the wrong measures you manage by vanity: “we had no lost-time injuries this quarter” while half the risk assessments are five years old and near-miss reporting has collapsed. Good measurement:
- Shows whether planned controls are implemented
- Spots deterioration early before a serious event
- Supports fair accountability for managers and supervisors
- Feeds review and continuous improvement
- Provides evidence for auditors, clients, and the board
Two families of indicator
Health and safety performance measures fall into two broad families. Course materials use overlapping labels — learn the idea, not a word fight.
| Family | Also called | Timing | What it answers |
|---|---|---|---|
| Active | Proactive, leading, positive | Before harm (or without needing harm) | Are we doing the right preventive work? |
| Reactive | Lagging, negative, outcome | After harm, loss, or failure | Did harm or failure still occur? |
Active / proactive / leading = you measure inputs, activities, and system health.
Reactive / lagging = you measure outcomes and losses.
Both are valid. Neither replaces the other.
Active (proactive / leading) indicators — effort before harm
Active indicators track whether people and systems are doing what the plan requires. They can improve even when nobody is injured this month — which is exactly the point: you want early warning and early assurance.
Typical active indicators
| Active measure | What it shows |
|---|---|
| Inspections completed vs planned | Are workplace checks happening on schedule? |
| % risk assessments current / reviewed on time | Is risk control documentation kept alive? |
| Training delivered / competence records in date | Are people competent for assigned tasks? |
| Near-miss reports raised (and quality of investigation) | Is the free-lesson culture working? |
| Audit actions closed on time | Are system gaps actually fixed? |
| Safety tours / management walkabouts completed | Are leaders visible and checking reality? |
| Permit-to-work compliance samples | Are high-risk controls followed? |
| Corrective actions from incidents closed | Are investigation remedies implemented? |
| Toolbox talks / briefings delivered | Is communication routine, not crisis-only? |
| PPE compliance checks (observations) | Are standards enforced in practice? |
| Statutory examinations completed in date | Plant integrity obligations met? |
| Contractor inductions completed before work | Temporary labour controlled? |
Why “more near-miss reports” can be good news
A rise in near-miss reports often means trust and reporting improved, not that the workplace suddenly became more dangerous. A sudden collapse in reports with no change in operations is a red flag (fear, form complexity, or “nothing happens when we report”). Active indicators need context, not blind targets that punish honesty.
Reactive (lagging) indicators — after harm or failure
Reactive indicators count what went wrong or what loss occurred. They are essential for legal reporting, cost analysis, and trend of real harm — but they are late signals. Someone (or something) already paid the price.
Typical reactive indicators
| Reactive measure | What it shows |
|---|---|
| Injury rates (AFR, LTIFR, accident frequency) | How often people are hurt relative to hours worked |
| Days lost / lost-time injuries | Severity and disruption of injury absence |
| Ill-health absence linked to work | Occupational disease and health outcomes |
| RIDDOR counts (UK) | Legally reportable deaths, injuries, diseases, dangerous occurrences |
| Property / plant damage events | Loss without necessarily a personal injury |
| First-aid cases / minor injuries | Smaller harm that still signals control failure |
| Enforcement notices / prosecutions | Regulatory failure outcomes |
| Insurance claims / civil claims | Financial and legal aftermath |
| Fires / environmental spills | Major loss events |
Side-by-side examples (memorise for classification)
| Measure | Active or reactive? | Why |
|---|---|---|
| Number of planned inspections completed this month | Active | Effort before harm |
| % of staff with in-date manual handling training | Active | Preventive competence |
| Near-miss reports per 100 workers | Active (leading culture/system signal) | Reports learning opportunity without requiring injury |
| Lost-time injury frequency rate | Reactive | Counts harm after it occurred |
| Days lost to work-related injury | Reactive | Outcome after injury |
| Number of RIDDOR reports this year | Reactive | Legal outcome events |
| Audit non-conformities closed within 30 days | Active | System improvement activity |
| Cost of property damage from forklift collisions | Reactive | Loss after failure |
| Risk assessments reviewed within review date | Active | Control documentation maintained |
| Specified injuries under RIDDOR | Reactive | Serious harm outcomes |
Both needed — the balanced view
| If you only use… | Blind spot |
|---|---|
| Only lagging (injuries) | You wait for blood before you manage; luck and under-reporting hide weak systems |
| Only leading (activity counts) | You may tick boxes while real harm rises; activity ≠ effectiveness |
Exam teaching line: Active measures check that the system is being operated; reactive measures check whether it is succeeding in preventing harm. Use them together and investigate mismatches (lots of inspections but rising slips; zero injuries but zero near misses and stale risk assessments).
The classic trap: low injuries ≠ safe
Organisations often celebrate “zero accidents” banners. Managing Safely expects you to challenge that comfort when:
- Under-reporting — people hide injuries to protect bonuses, avoid blame, or keep a clean scoreboard
- Luck / low exposure — quiet periods, short contracts, or low hours reduce chance of injury without improving control
- Definition games — reclassifying lost-time as “first aid only,” pressuring people back early
- Wrong scope — contractors, temporary staff, or off-site work excluded from the rate
- No leading data — nobody checks whether guards, training, and risk assessments still exist
Manager response to a low injury rate: ask for leading indicators and qualitative evidence (inspection findings, audit results, near-miss quality). Zero injuries with silent near-miss systems and overdue statutory checks is not a success story.
How managers use the two types week to week
- Set a small dashboard — e.g. three leading + two lagging measures for your area.
- Review monthly — trends matter more than single-month noise.
- Link to actions — every amber/red measure needs an owner and deadline.
- Talk about leading measures in team briefings — “we closed 12 of 14 inspection actions” teaches what “good” looks like.
- Never attach pure injury-rate bonuses that encourage concealment — if you reward “zero,” check reporting culture hard.
Link to other modules
- Investigating incidents — near-miss volume and investigation quality are leading culture measures; RIDDOR and injury counts are lagging.
- Risk assessment & control — % assessments current and control implementation checks are active.
- Auditing & inspection (later sections) — generate the evidence that feeds active indicators.
Manager checklist
- Can I name at least five active measures relevant to my team?
- Can I name the main reactive measures we report (including legal ones)?
- Do we review both families, not only accident frequency?
- Would a “zero injury” month still trigger concern if inspections and training were overdue?
- Do targets encourage honest reporting rather than silence?
Master the active/reactive split, the example tables, and the low-injury trap, and you lock easy classification marks while building a performance picture that actually prevents harm.
Which of the following is best classified as an active (proactive / leading) indicator?
Why is over-reliance on a low accident rate alone a classic management trap?
Days lost to work-related injury and the number of RIDDOR reports are best described as:
A site’s lost-time injuries fall to zero, but near-miss reports also drop to almost zero and many inspections are overdue. What is the best managerial conclusion?