How Many First Aiders Does Your Workplace Need?
"How many first aiders do we need?" is one of the most common safety questions Irish employers ask — and the answer is not a single number. Here is how to work it out properly.
Is there a set number of first aiders in Ireland?
One of the most common questions Irish employers ask is, "How many first aiders do we actually need?" The honest answer is that there is no fixed legal ratio. The Safety, Health and Welfare at Work (General Application) Regulations 2007, Part 7require employers to provide first aid that is appropriate to the workplace, but they deliberately avoid a one-size-fits-all figure. Instead, the number flows from a first aid needs assessment.
This approach makes sense. A quiet accountancy office and a busy food-production plant of identical headcount face very different risks, so a single national number would either over-burden the office or leave the plant dangerously short. The Health and Safety Authority (HSA) expects you to think it through for your own situation.
The right question is not "what is the minimum?" but "who will be trained and available, on every shift, if someone collapses or is injured?"
What drives the number you need
When you carry out your assessment, weigh up the following factors together rather than in isolation:
- Level of risk. Low-hazard environments such as offices generally need fewer first aiders than higher-hazard settings like construction, manufacturing, warehousing or kitchens.
- Total number of employees across the organisation.
- Layout and distance. Multiple floors, separate buildings or a large site may each need their own cover.
- Shift and rota patterns. Night shifts, weekends and early starts all need someone trained on duty.
- Holidays, sickness and turnover. Always plan for absence so you are never left with zero cover.
- Travel time to emergency services for remote or rural sites.
A sensible way to plan cover
Although there is no statutory ratio, a practical rule of thumb helps many businesses get started. Treat the following as a planning aid, not a legal minimum, and always sense-check it against your own risks:
- Lower-risk workplaces: an appointed person for very small teams, scaling up to one or more trained occupational first aiders as numbers grow.
- Higher-risk workplaces: at least one trained occupational first aider available at all times, with additional cover as headcount and hazards rise.
The key test is availability. Two trained first aiders who are never on the same shift can still leave gaps; one always on site may be plenty for a small low-risk team.
Key takeaways
- Irish law sets no fixed first aider ratio — the number comes from your needs assessment.
- Risk level, headcount, layout, shifts and distance to help all influence the figure.
- Plan for absence so there is never a shift with no trained cover.
- Higher-risk sites should aim for trained cover available at all times.
- Review the number whenever your workplace, staff or processes change.
The appointed person vs the trained first aider
In lower-risk workplaces you may rely on an appointed person: someone who takes charge in an emergency, calls for help and looks after the first aid box, but who is not a fully trained first aider. As risk and size increase, you should move to one or more occupational first aidersholding a recognised, in-date qualification. Many employers train more people than the bare minimum precisely so that holidays and sick days never leave them exposed.
First Aid training from €35
Self-paced, HSA-aligned, certificate the same day — €35 per person.
Don't forget renewals and records
First aid qualifications do not last forever. Keep a simple register of who is trained, the date each certificate was issued and when it needs refreshing, and book renewals before they lapse. Recording this clearly is also the easiest way to show an HSA inspector that you have thought your provision through.
Training that fits busy teams
One reason employers under-provide first aid cover is the perceived hassle of getting people trained. Modern self-paced online training removes most of that friction: staff can complete a recognised course around their shifts, without travel or a full day off the floor. That makes it far easier to train two or three people instead of one, and to keep cover during holidays and busy periods.
When you decide who to train, choose people who are usually on site, spread across different teams and shifts, and comfortable taking the lead in a crisis. A good mix of locations and rotas is often more valuable than simply hitting a headline number.
If you are still deciding what your overall obligations are, start with our overview of first aid at work in Ireland, and make sure your team can confidently deliver CPR and use a defibrillator when seconds matter.
