When businesses start thinking seriously about workplace wellbeing, one of the most common questions they ask is:
How many Mental Health First Aiders should a company have?
It is an important question, but it is even more useful when considered alongside the role of Mental Health First Responders, especially for organisations that want a practical way to respond when someone is in crisis or immediate distress.
The truth is that there is NO single legal formula that tells every employer exactly how many Mental Health First Aiders or Mental Health First Responders they should have. According to the Health and Safety Executive (HSE), there are no hard and fast rules on exact numbers, as provision should reflect the circumstances of the workplace and the findings of a first-aid needs assessment. HSE also states that employers must make a suitable and sufficient assessment of risks to employees’ health and safety, which includes mental health needs.
Therefore, the right number might depend on the size of the business, the structure of the workforce, working patterns, and how accessible support needs to be across the organisation. Rather than asking for the minimum, employers should focus on building a workplace where help is visible, timely, and appropriate.
Why Mental Health First Aiders should not be the only answer
Mental Health First Aiders can play an important role in a workplace, but not every employee needs to become a Mental Health First Aider. The role can sometimes come with the expectation of offering ongoing emotional support, almost as if they should act like a therapist, counsellor, or long-term source of help. This can place significant pressure on employees and blur the boundaries of what a Mental Health First Aider is actually there to do.
That is why many employers are now looking at Mental Health First Responders as a more practical model. Rather than creating an expectation of ongoing support, Mental Health First Responders are trained to respond in a crisis, provide immediate help in the moment, and guide the person towards the right next step. This makes Mental Health First Responders a clearer and more manageable role for many organisations.
A practical ratio for workplace mental health support
A strong and realistic model is to ensure that 100% of employees receive mental health awareness training, while around 1 in 10 employees are trained as Mental Health First Aiders or Mental Health First Responders. This means everyone in the organisation has a baseline understanding of mental health, but there is also a dedicated network of trained individuals who are more confident in recognising when someone may be in crisis and providing an appropriate first response.
This approach works well because it avoids placing too much responsibility on too few people, while also recognising that Mental Health First Responders are not there to provide counselling, therapy, or ongoing emotional support. Their role is to help in the moment, respond calmly, and guide a person towards the right next step. That is why a ratio such as 1 in 10 can be so effective: it creates enough visibility and coverage without misunderstanding the purpose of the role.
Why Mental Health First Responders are different
Although the terms are sometimes used closely together, it is helpful to distinguish between general mental health support in the workplace and the specific role of Mental Health First Responders. A workplace may have many people who are supportive, approachable, and trained in awareness, but Mental Health First Responders serve a more focused purpose.
A Mental Health First Responder is there to provide an initial response when someone is experiencing acute distress, a mental health crisis, or an urgent moment where they need calm and appropriate intervention. Unlike ongoing wellbeing support, line management, or regular check-ins, the role of Mental Health First Responders is not to carry someone’s situation over time. Instead, they are there to respond at the point of need and help the individual access the right support afterwards.
This is one reason many organisations are increasingly interested in Mental Health First Responders. They want a workplace culture where mental health is openly understood by all, but where there are also trained people ready to step in appropriately if a crisis happens.
Should every employee be a Mental Health First Responder?
In most cases, NO. It is usually more practical for every employee to receive Mental Health Awareness training, while only a smaller proportion are trained as Mental Health First Responders. This is because the purpose of Mental Health First Responders is specialised. They are not intended to become the emotional support system for the entire organisation, nor are they there to replace managers, HR, EAPs, or clinical professionals.
By training 1 in 10 employees as Mental Health First Responders, businesses can create a visible and trusted support structure without blurring boundaries. This also helps employees understand that Mental Health First Responders are there for immediate situations, while broader support for wellbeing should still come from a wider organisational approach.
Why peer-to-peer support makes the model stronger
Whether someone speaks to one of your Mental Health First Aiders or Mental Health First Responders, support often feels more approachable when it comes from someone who understands the context of the role. Managers may be more comfortable speaking to managers. Colleagues may find it easier to open up to colleagues who understand the pressure, pace, and demands of their day-to-day work.
That is why peer-to-peer distribution matters. Instead of placing all Mental Health First Aiders in HR or senior leadership, organisations can spread both Mental Health First Aiders and Mental Health First Responders more thoughtfully across teams. This does not replace formal escalation or professional support, but it does make early support feel more relevant and more accessible.
Mental Health First Aiders remains an important part of this structure, but the presence of Mental Health First Responders can make the whole system more responsive. It allows businesses to build a culture where support is not concentrated in too few people.
How many Mental Health First Aiders or Mental Health First Responders does a company really need?
The answer depends on how your company operates. A small office with a single team may need fewer Mental Health First Aiders and Mental Health First Responders than a multi-site organisation with shift workers, hybrid teams, or high-pressure roles. The key is not simply headcount, but coverage.
For example, if a company chooses the 1 in 10 model for Mental Health First Responders, it should still consider whether those trained people are available across departments, working hours, and sites. A business may technically meet the ratio on paper, but if all its Mental Health First Responders sit in one office or all work the same pattern, employees may still struggle to access support in a crisis.
This is why the best approach is to combine a simple ratio with practical workforce planning. Mental Health First Responders should be visible, available, and distributed in a way that reflects how the organisation actually works.
A layered model works better than relying on one solution
No business should rely on Mental Health First Aiders and Mental Health First Responders alone. They are an important part of workplace support, but they are only one part. The strongest organisations create a layered structure where mental health awareness is shared by all, managers understand their responsibilities, and Mental Health First Responders are available for immediate response when someone is in distress.
This layered model is powerful because it sets clear expectations. Everyone plays a role in creating a supportive culture. Managers still manage. HR still provides structure and policy guidance. External support services still matter. And Mental Health First Responders remain focused on what they are trained to do best: responding appropriately in a critical moment.
That distinction is important, because when businesses misunderstand the role of Mental Health First Responders, they risk expecting too much from them. When the role is understood properly, however, Mental Health First Responders can be one of the most valuable parts of a workplace mental health strategy.
Final Thoughts
So, how many Mental Health First Aiders should a company have? The most accurate answer is that there is no single legal number. Employers should use a needs assessment, consider their workplace risks, and make sure mental health support is visible and accessible. HSE supports a needs-based approach, while St John Ambulance recommends trying to treat mental health in a similar way to physical health, including aiming for comparable first-aider coverage.
For many organisations, the strongest approach is not to expect every employee to become a Mental Health First Aider. Instead, they can build support in layers: awareness for all, and a wider network of Mental Health First Aiders and Mental Health First Responders to help in crisis situations and immediate moments of distress.
That creates a workplace where support is more realistic, more visible, and easier to access. It also makes it easier to balance responsibility, boundaries, and culture in a way that works for real teams, not just policy documents.