Workplace First Aid Requirements Calculator
How Many First Aiders Do You Need at Work?
One of the most common questions employers ask is: “How many first aiders do I need in my workplace?”
The answer isn’t always straightforward. UK law requires employers to provide adequate and appropriate first aid provision, but the exact number of trained first aiders depends on several factors such as the size of your workforce, the risks involved in your work, and your workplace layout.
To help simplify the process, we’ve created a Workplace First Aid Requirements Calculator that estimates how many trained first aiders your organisation may need.
Why First Aid Provision Matters
Accidents and medical emergencies can happen anywhere — offices, warehouses, construction sites, or retail environments. Having trained first aiders on site ensures employees receive immediate care before professional medical help arrives.
Under the Health and Safety (First-Aid) Regulations 1981, employers must ensure they provide adequate first aid equipment, facilities, and trained personnel for their workforce.
Failure to provide appropriate first aid provision could lead to:
Legal penalties
Insurance complications
Increased injury severity
Damage to employee trust and morale
Most importantly, proper first aid coverage can save lives.
How Many First Aiders Are Required in a Workplace?
The Health and Safety Executive (HSE) does not specify a single rule that applies to every workplace. Instead, employers must carry out a First Aid Needs Assessment to determine the appropriate level of provision.
However, HSE guidance offers general recommendations.
Low-Risk Workplaces (Offices, Shops)
| Number of Employees | Recommended Provision |
|---|---|
| Fewer than 25 | At least one appointed person |
| 25 – 50 | At least one Emergency First Aid at Work (EFAW) trained first aider |
| 50+ | One First Aid at Work (FAW) trained first aider per 100 employees |
Higher-Risk Workplaces (Factories, Construction)
| Number of Employees | Recommended Provision |
|---|---|
| Fewer than 5 | At least one appointed person |
| 5 – 50 | At least one trained first aider |
| 50+ | One FAW trained first aider per 50 employees |
These guidelines are only a starting point and should be adjusted based on your specific workplace risks and circumstances.
Factors That Affect Your First Aid Requirements
A proper assessment considers more than just employee numbers.
1. Workplace Risk Level
Higher-risk environments require more trained first aiders and higher-level qualifications.
Examples of higher risk industries include:
Construction
Manufacturing
Warehousing
Agriculture
2. Workplace Layout
Large sites, multiple floors, or separate buildings may require additional first aid coverage in each area.
3. Shift Work
If your business operates shifts or night work, you must ensure first aiders are available at all times.
4. Remote or Isolated Workers
Employees working off-site or travelling may need personal first aid kits or additional training.
5. Staff Absences
Holiday, sickness, and shift changes mean you should always have backup first aiders available.
Types of Workplace First Aid Personnel
Understanding the different types of first aid roles can help determine what your organisation needs.
Appointed Person
Responsible for managing first aid arrangements, equipment, and contacting emergency services.
Emergency First Aid at Work (EFAW)
A 1-day course covering basic emergency first aid skills for low-risk workplaces.
First Aid at Work (FAW)
A 3-day course providing comprehensive training for higher-risk workplaces or larger teams.
Use Our Workplace First Aid Calculator
Because every workplace is different, calculating your first aid requirements manually can be confusing.
Our Workplace First Aid Requirements Calculator considers:
Number of employees
Industry risk level
Shift patterns
Workplace size
Public access
Remote workers
In seconds, you’ll get an estimate of:
✔ Recommended number of first aiders
✔ Suggested training level (EFAW or FAW)
✔ Additional considerations for compliance
This makes it easier for businesses to understand their responsibilities and start planning appropriate training.
Why Conduct a First Aid Needs Assessment?
A First Aid Needs Assessment ensures your organisation:
Meets legal requirements
Protects employees and visitors
Reduces liability risks
Maintains workplace safety standards
Employers should review their assessment regularly, especially when staff numbers change or new workplace hazards are introduced.
Final Thoughts
Workplace first aid provision is more than a regulatory requirement — it’s a critical part of protecting your employees and creating a safe working environment.
Whether you run a small office or a large industrial operation, ensuring the right number of trained first aiders is essential.
👉 Use our Workplace First Aid Requirements Calculator to quickly estimate how many first aiders your business may need and take the first step toward compliance.