If you’re responsible for health and safety at work, one of the most common questions you’ll ask is:
“How many first aiders does my business need?”
The honest answer is there isn’t a fixed legal number.
Instead, UK employers are required to carry out a first aid needs assessment to determine the level of first aid provision that’s appropriate for their workplace.
Key Points
- There is no legal minimum number of first aiders.
- Every employer should complete a first aid needs assessment.
- Higher-risk workplaces usually require more trained first aiders.
- First aid certificates are generally valid for three years.
- If you’re unsure, ask us for advice.
What Does the Law Say?
The Health and Safety (First-Aid) Regulations 1981 require employers to provide adequate and appropriate first aid equipment, facilities and personnel to ensure employees receive immediate attention if they’re injured or become ill at work.
Exactly what is considered ‘adequate and appropriate’ depends on several factors, including:
- The number of employees
- The type of work being carried out
- The level of risk within the workplace
- Previous accident history
- The age and health of employees
- Whether employees work alone or remotely
- Shift patterns and holiday cover
- How quickly emergency services could reach the workplace
For this reason, two businesses with the same number of employees may require completely different levels of first aid provision. For example a small office with six employees may only need one Emergency First Aid at Work qualified first aider. A construction company with 40 staff working across multiple sites is likely to require several fully qualified First Aid at Work first aiders, depending on the findings of its first aid needs assessment.
Low-Risk Workplaces
Many offices, shops, salons and similar lower-risk workplaces require at least one trained first aider.
For smaller businesses, a one-day Emergency First Aid at Work (EFAW) qualification is often sufficient, although this should always be confirmed through your first aid needs assessment.
Examples include:
- Offices
- Retail premises
- Hair and beauty salons
- Estate agents
- Professional services
- Small hospitality businesses
Higher-Risk Workplaces
Businesses where employees are exposed to greater hazards usually require a higher level of first aid provision.
Examples include:
- Construction sites
- Manufacturing
- Warehousing
- Engineering
- Agriculture
- Forestry
- Outdoor activity providers
In these environments, employers often need one or more staff trained in First Aid at Work (FAW) rather than the shorter Emergency First Aid at Work course.
How Many Qualified First Aiders Should I Have?
There is no simple formula sadly.
However, your first aid needs assessment should consider:
- How many people are normally on site?
- Are first aiders available during all working hours?
- What happens during annual leave or sickness?
- Are there multiple buildings or floors?
- Do employees work alone?
- Is the workplace open to members of the public?
- Are there higher-risk activities taking place?
Many employers choose to train more than the minimum number of staff to ensure there is always qualified cover available.
Do Small Businesses Need a First Aider?
Often, yes.
Even if you only employ a handful of people, you still have a legal duty to provide appropriate first aid arrangements.
In some very low-risk workplaces, an appointed person may be sufficient. In many cases, however, having at least one employee trained in Emergency First Aid at Work provides reassurance and helps ensure someone can respond confidently in an emergency.
What About Lone Workers?
If your employees work alone or away from your main workplace, your first aid needs assessment should consider:
- How quickly help can arrive
- Whether mobile phone coverage is available
- The type of work being carried out
- Whether additional training or equipment is needed
This is particularly important for people working outdoors or in remote locations.
How Often Do First Aiders Need to Renew Their Qualification?
First aid qualifications don’t last forever.
Most workplace first aid certificates remain valid for three years, after which staff should complete the appropriate requalification or refresher training to remain competent and compliant.
Keeping qualifications up to date helps ensure first aiders remain confident in life-saving skills such as CPR, using an AED and managing serious bleeding.
Frequently Asked Questions
Is there a legal ratio of first aiders to employees?
No. UK law doesn’t specify a set ratio. Employers must carry out a first aid needs assessment and provide appropriate first aid arrangements based on the risks within their workplace.
Can one first aider cover the whole business?
Sometimes, but only if that’s appropriate for your workplace. You should consider holidays, sickness, shift patterns, multiple locations and whether that person would always be available when needed.
Do I need a First Aid at Work or Emergency First Aid at Work qualification?
That depends on the findings of your first aid needs assessment. Lower-risk workplaces often choose Emergency First Aid at Work, while higher-risk businesses may require the more comprehensive First Aid at Work qualification.
What if I’m not sure what my business needs?
You’re not alone. Many employers are unsure which qualification is appropriate, particularly when they’re arranging training for the first time.
Need Help Choosing the Right Course?
If you’re unsure how many first aiders your business needs, or which qualification is most appropriate, we’re always happy to help.
At North Wales First Aid, we provide friendly, practical advice based on your workplace, industry and level of risk. Whether you’re booking for a small office, a school, an outdoor organisation or a larger business, we can help you choose the right training without any obligation.
You can also read our Which First Aid Course Do I Need? guide or browse our upcoming open course dates across North Wales.