If you’re responsible for health and safety in your workplace, you’ve probably asked yourself, “How many first aiders does a business need?” It’s an important question, but one that doesn’t have a simple numerical answer.
Many employers assume UK law specifies a set number of trained first aiders based solely on the size of their workforce. In reality, the Health and Safety (First-Aid) Regulations 1981 require employers to provide adequate and appropriate first aid arrangements based on their individual circumstances.
The right level of provision depends on factors such as the type of work you carry out, the risks involved, the number of employees and how your business operates. This guide explains how to assess your requirements and ensure your organisation is prepared when an emergency occurs.
The Short Answer Every Employer Should Know
There is no legal rule stating exactly how many first aiders your business must have.
Instead, employers are required to complete a First Aid Needs Assessment to determine what level of first aid provision is appropriate for their workplace.
Your assessment should consider:
- The nature of your work and its associated risks
- The number of employees
- The layout of your premises
- Shift patterns and working hours
- Lone or remote workers
- Public access to your premises
- Holiday and sickness cover
- Previous accidents or incidents
Once you’ve completed this assessment, you’ll be in a much better position to decide whether you need an Appointed Person, Emergency First Aid at Work (EFAW) trained staff, First Aid at Work (FAW) qualified personnel, or a combination of these.
What Does The Law Actually Say?
The Health and Safety (First-Aid) Regulations 1981 require employers to provide:
- Adequate and appropriate first aid equipment
- Suitable facilities where necessary
- An appropriate number of trained personnel
The regulations deliberately avoid prescribing fixed numbers because every workplace presents different risks.
A small office with twenty employees has very different first aid requirements to a manufacturing facility employing the same number of people.
To help employers make informed decisions, the Health and Safety Executive (HSE) publishes practical guidance in its First Aid at Work (L74) publication.
What Is A First Aid Needs Assessment?
A First Aid Needs Assessment is a review of your workplace that identifies the level of first aid provision required for your business.
Rather than focusing solely on employee numbers, it considers the wider picture.
Questions to ask include:
- Is the workplace considered low or high risk?
- How many people work on site?
- Do staff work alone?
- Are there multiple buildings or floors?
- Do employees work different shifts?
- Are members of the public regularly on site?
- How quickly could emergency services reach your location?
- Do you have adequate cover during holidays and sickness?
Your assessment should be reviewed whenever your business changes, such as recruiting additional staff, moving premises or introducing new equipment or processes.
Employee Numbers Matter, But They Aren’t The Whole Story
While workforce size is an important consideration, it should never be viewed in isolation.
For example, two businesses employing fifty people may require completely different first aid arrangements depending on the work they undertake.
An office environment generally presents fewer hazards than a warehouse, engineering workshop or manufacturing facility.
Likewise, businesses operating across several sites or multiple shifts may require additional trained personnel to ensure appropriate cover is always available.
The key is ensuring someone suitably trained is available whenever employees are working.
Choosing The Right Level Of First Aid Training
Different workplaces require different levels of training.
The table below highlights the main differences.
| Provision | Suitable For | Key Responsibilities |
|---|---|---|
| Appointed Person | Very low-risk workplaces where appropriate | Looks after first aid arrangements, maintains equipment and contacts emergency services. They are not a qualified first aider. |
| Emergency First Aid At Work (EFAW) | Lower-risk workplaces | Provides emergency first aid for common workplace incidents including CPR, choking, severe bleeding and unconscious casualties. |
| First Aid At Work (FAW) | Higher-risk workplaces or larger organisations | Covers a wider range of injuries, illnesses and workplace emergencies with more comprehensive practical training. |
If you’re unsure which qualification is appropriate, our guide on What First Aid Training Does My Business Legally Need? provides further information
Factors That Often Mean You Need More First Aiders
Many businesses underestimate the number of trained staff they require because they focus only on headcount.
You may need additional first aiders if your organisation has:
- Multiple buildings or large premises
- Several floors
- Shift workers
- Night staff
- Lone workers
- Employees working remotely
- Hazardous equipment or machinery
- High numbers of visitors or contractors
- Remote working locations
- Higher-risk working environments
Your First Aid Needs Assessment should take all of these factors into account.
Don’t Forget Holiday & Sickness Cover
One common mistake is relying on a single qualified first aider.
If that individual is:
- On annual leave
- Off sick
- Working elsewhere
- Attending meetings
- Taking a lunch break
your business may temporarily have no effective first aid cover.
When deciding how many people to train, always consider who will provide cover during planned and unexpected absences.
Practical Examples
Small Office
A professional services office with relatively few workplace hazards may only require a small number of trained personnel following a suitable First Aid Needs Assessment.
Manufacturing Or Engineering Business
A workplace involving machinery, manual handling or hazardous processes is likely to require more comprehensive first aid provision and a higher number of trained first aiders.
Schools & Care Settings
Educational settings and care providers often have additional responsibilities because they support children or vulnerable adults. Their First Aid Needs Assessment should reflect the needs of those in their care as well as their employees.
A Simple First Aid Needs Assessment Checklist
Use this checklist when reviewing your workplace:
- Have you completed a documented First Aid Needs Assessment?
- Have you considered the risks associated with your work?
- Is your current number of trained first aiders sufficient?
- Is there adequate cover during holidays and sickness?
- Are your first aid kits appropriately stocked?
- Do staff know how to summon assistance?
- Have any workplace changes affected your requirements?
- Are qualifications still valid, or do they need renewing?
Regular reviews help ensure your first aid arrangements remain appropriate as your business evolves.
Choosing The Right First Aid Course
Once you’ve identified your requirements, selecting the appropriate training becomes much easier.
Depending on your assessment, you may benefit from:
- First Aid Courses
- Emergency First Aid At Work
- Level 3 Award In First Aid At Work
- First Aid At Work Refresher
If you’re reviewing your workplace arrangements, you may also find these articles useful:
Frequently Asked Questions
Is There A Legal Minimum Number Of First Aiders?
No. UK legislation does not specify a fixed minimum number. Employers must determine appropriate provision through a First Aid Needs Assessment.
Does Every Business Need A Qualified First Aider?
Not necessarily. The level of provision depends on your workplace risks and the findings of your assessment.
How Often Should A First Aid Needs Assessment Be Reviewed?
Review it whenever your workplace changes significantly, such as increased staffing levels, new work activities, relocation or changes to workplace risks.
What’s The Difference Between Emergency First Aid At Work And First Aid At Work?
Emergency First Aid at Work is generally suitable for lower-risk workplaces and covers essential emergency skills. First Aid at Work provides more comprehensive training for higher-risk environments or businesses with more complex first aid requirements.
Can Training Be Delivered At Our Workplace?
Yes. Essex Medical Training Ltd can deliver workplace first aid training at client premises where appropriate, helping organisations train multiple employees efficiently.
Final Thoughts
Providing the right level of first aid cover isn’t about meeting an arbitrary number. It’s about ensuring your employees, visitors and workplace are properly protected should an emergency arise.
By completing a thorough First Aid Needs Assessment and reviewing it regularly, you can make informed decisions that support both legal compliance and employee wellbeing.
If you’re unsure which qualification best suits your organisation or would like advice on workplace first aid training, the team at Essex Medical Training Ltd can help you understand your options and choose the most appropriate course for your business.
Call us: 0330 332 5616
Email: admin@essexmedicaltraining.co.uk
Location: Unit 3, Hawk Hill, Battlesbridge, Wickford, Essex



