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Why PPE Is the Last Line of Defence

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Personal Protective Equipment (PPE) has a vital role in workplace safety, particularly in environments where exposure to hazards cannot be fully removed. However, PPE should never be viewed as the primary method of protection. In line with UK health and safety best practice — including the principles set out in COSHH, HSG258 and the wider Hierarchy of Control — PPE always sits at the bottom of the control spectrum.

Understanding why PPE is the final layer of defence helps organisations make better safety decisions and ensures their workforce is protected through more effective, long-term measures.


The Hierarchy of Controls

Effective safety management follows a structured hierarchy, prioritising the strongest and most reliable forms of protection:

  • Elimination – Removing the hazard entirely.
  • Engineering Controls – Isolating people from the hazard through physical measures such as barriers, guards or ventilation.
  • Substitution – Replacing a hazardous material, process or chemical with a safer alternative.
  • Administrative Controls – Procedures, training, supervision and set working practices that reduce exposure.
  • PPE – Equipment worn by workers to reduce the risk of harm.

PPE appears at the bottom because it does not remove or control the hazard itself. It simply places a protective barrier between the risk and the worker. If every higher-level control has not been properly applied, PPE alone will never be sufficient.


Limited Reliability

One of the core reasons PPE is considered a last resort is that it depends heavily on human behaviour:

  • Workers must remember to wear it.
  • It must fit correctly.
  • It must be maintained and replaced promptly.
  • It must be used exactly as intended.

Any lapse — even a momentary adjustment — can compromise protection. Unlike engineering controls, which operate consistently without user intervention, PPE is vulnerable to error, damage, and incorrect use. Even when worn perfectly, items like masks or gloves cannot eliminate exposure completely.


Protection Levels Can Differ

No single piece of PPE provides full, universal protection. Each item addresses only a specific hazard:

  • Safety goggles protect eyes but not the respiratory system.
  • Gloves can reduce chemical contact but offer no protection if torn.
  • Hearing protection reduces noise exposure but cannot prevent all vibration-related risks.

This means residual risk always remains. PPE is a buffer — not a comprehensive solution.


Discomfort and Fatigue

Extended use of PPE can cause fatigue, heat stress, restricted movement or general discomfort. In real working conditions, this can lead to:

  • Reduced concentration
  • Lower productivity
  • Improper use
  • Workers removing PPE to “take a break”

Every one of these scenarios increases risk. A safer approach is always to design hazards out of the environment wherever possible, rather than relying on equipment that introduces new challenges.


Cost and Ongoing Maintenance

While PPE might seem cost-effective initially, long-term reliance can be expensive:

  • Frequent replacement
  • Proper cleaning and storage
  • Fit testing for respiratory protection
  • Continuous training
  • Monitoring use across teams

These ongoing demands make PPE an unsustainable standalone control. Addressing the underlying hazard through engineering or process improvements is almost always more reliable and cost-effective over time.


The Role of PPE in a Safe Workplace

Despite its limitations, PPE still plays a crucial part in a fully compliant safety framework. It is essential when:

  • Higher-level controls aren’t possible
  • Short-term or maintenance tasks create unavoidable exposure
  • Emergency situations arise
  • Additional layers of protection are required for high-risk environments

However, PPE should always form part of a wider, proactive safety strategy. This includes robust risk assessments, clear processes, competent training, and — wherever achievable — prioritising engineering and elimination controls.

To round it up, PPE is indispensable, but it is the final safeguard after every other control has been explored, implemented, or proven impractical. Organisations committed to genuine safety — not just compliance — focus first on removing or engineering out hazards and use PPE only to manage remaining, unavoidable risks.

By taking this higher-level approach, workplaces create environments that are safer, more efficient, and aligned with the standards we uphold across the Burgun Group: protecting people, proving compliance, and preventing risk.