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# What Is a Mitigating Control?
- URL: https://www.whsbrief.com/what-is-a-mitigating-control/
- Published: 2025-04-10T00:00:00.000Z
- Updated: 2026-08-07T23:15:33.000Z
- Description: Mitigating controls don't stop an incident happening, they reduce the harm once it does. This post explains the difference between preventative and mitigating controls, with real-world examples, and when a mitigating control should be treated as critical.
- Author: WHS Brief
- Tags: blog

![What Is a Mitigating Control?](https://static.wixstatic.com/media/7d43fccd1639499788df23dc440afbc7.jpg/v1/fill/w_2500,h_1660,al_c/7d43fccd1639499788df23dc440afbc7.jpg) 

*Originally published by Jessica Urquhart.*

When most people think about risk controls, they immediately focus on prevention – how to stop something bad from happening in the first place. But what happens when prevention isn't enough, or a failure slips through the cracks? That's where *mitigating controls* come into play.

Mitigating controls are the unsung heroes in our risk management toolkit. They don't stop an incident from occurring – instead, they reduce the impact if it does.

*First responders and medical evacuation teams are powerful examples of mitigating controls – they reduce harm when incidents do occur.*

## Understanding Mitigating Controls in Simple Terms

Put simply, a **mitigating control** is something that *minimises harm* once the hazard has been triggered. Think of it like an airbag in a car. It doesn't stop the crash, but it reduces the severity of injuries if one occurs.

In workplaces, mitigating controls are vital for managing **residual risk** – the level of risk that remains even after prevention efforts are in place. They form the second line of defence when your preventative measures fail or are bypassed.

## Real-World Examples of Mitigating Controls

To help make it real, here are a few everyday examples:

- **Fire suppression systems** in a commercial kitchen. They don't stop the fire from starting, but they control it quickly to prevent catastrophic damage.
- **Emergency shutdown systems** on machinery. If a critical fault occurs, these systems reduce harm by halting operations before it escalates.
- **First aid and medical response**. You can't undo an injury, but timely treatment can significantly reduce long-term harm or complications.
- **Spill containment kits**. They don't stop a spill from happening, but they help limit environmental and health impacts.
- **Rescue and emergency crews**, as shown above – essential when time is critical.

## How Are Mitigating Controls Different from Preventative Controls?

Let's break it down:

- **Preventative controls** aim to stop the hazard from becoming an incident.
- **Mitigating controls** aim to reduce the consequences *after* the hazard has triggered the event.

Both are crucial, and most high-risk work environments need a layered approach with controls that **prevent**, **detect**, and **respond**.

## Are Mitigating Controls Ever Critical Controls?

Absolutely. In high-consequence environments like mining, construction, or community services, mitigating controls can absolutely be *critical*. If a specific mitigating control is the only barrier between an event and serious harm – such as a fatality or major financial loss – it should be classified and treated as a **critical control**.

The key is to assess:

- The **consequence** if the control fails
- Whether there is **anything else** protecting you from harm

If the answer is "nothing else," or "this is our last line of defence," then it's a good candidate for a critical control.

## Why Do Mitigating Controls Get Overlooked?

In my experience, many businesses unintentionally over-focus on prevention and under-resource mitigation. There's a common belief that if we just "do everything right," we won't need mitigation.

But this sets us up for failure when something *does* go wrong – and it certainly can.

A well-rounded risk program must accept that things can and do fail, and build resilience through smart, well-designed mitigating controls.

## The Bottom Line

Mitigating controls might not stop the incident, but they play a critical role in **limiting harm**, protecting people, and supporting recovery. They are especially important in dynamic, high-risk, or complex environments – where prevention alone isn't always enough.

If you're unsure which of your controls are preventative or mitigating – or whether they're even *controls* at all – it's time to take a closer look. Getting this right could mean the difference between a near miss and a life-altering event.