Mental health has become one of the most important workplace conversations in recent years. Yet many managers and colleagues still feel unsure about how to recognise when someone may be struggling.
Often, the signs are not dramatic or obvious. Employees rarely walk into work and openly say they are experiencing poor mental health. Instead, the warning signs tend to appear gradually through changes in behaviour, communication, performance, or energy levels.
Recognising these early signs matters because mental health challenges can affect not only individual wellbeing, but also team dynamics, productivity, absenteeism, and workplace culture. When organisations are able to identify concerns earlier, employees are more likely to receive support before problems escalate into burnout, long-term sickness absence, or crisis situations.
Understanding what to look for is therefore an important part of creating a healthier and safer workplace.
Why Mental Health Often Goes Unnoticed at Work
Many employees work hard to hide their struggles. Some fear being judged, while others worry that speaking up could affect career progression or relationships at work.
This means that mental health concerns are often masked behind professionalism, humour, or overworking. In some cases, employees may continue performing well for long periods while quietly experiencing high levels of stress, anxiety, or emotional exhaustion.
According to Mind, many employees experiencing poor mental health do not seek support immediately because of stigma, fear, or uncertainty about how others will respond.
This is why managers and colleagues should not only look for major warning signs. Small behavioural changes can often provide the clearest indication that someone may need support.
Common Signs That Someone May Be Struggling With Their Mental Health
One of the earliest signs is often a noticeable change in behaviour or personality. Someone who is usually engaged and sociable may become withdrawn, quieter than usual, or disconnected from team conversations. Others may appear more irritable, emotional, or frustrated over small issues.
Communication patterns can also change. Employees may take longer to respond, avoid meetings, struggle to contribute during discussions, or appear less confident than normal. Some individuals begin isolating themselves socially, avoiding lunch breaks with colleagues or switching off their camera during virtual meetings more frequently.
Changes in work performance can also be an indicator. This may include difficulty concentrating, increased mistakes, missed deadlines, forgetfulness, or reduced motivation. Employees who previously managed workloads effectively may suddenly appear overwhelmed by tasks they once handled comfortably.
Physical signs can sometimes emerge as well. Persistent tiredness, low energy, visible exhaustion, headaches, or changes in appearance may all reflect ongoing stress or emotional strain.
Another important warning sign is presenteeism. This happens when employees continue working despite struggling mentally or physically. On the surface, they may appear committed because they rarely take time off, but internally they may be experiencing significant stress, anxiety, or burnout. Over time, this can lead to declining performance and worsening wellbeing.
The Difference Between Stress and More Serious Mental Health Concerns
Not every difficult period indicates a mental health condition. Everyone experiences stress occasionally, particularly during busy periods or organisational change.
However, concern should grow when signs persist over time, become more severe, or begin affecting daily functioning.
For example, temporary stress may improve after a deadline passes or workload reduces. But when someone consistently appears exhausted, disengaged, emotionally distressed, or unable to cope for several weeks, it may indicate a deeper mental health issue that requires support.
The key is not trying to diagnose someone. Managers and colleagues are not expected to become therapists or mental health professionals. Instead, the goal should be recognising when someone may not be coping well and responding appropriately.
Why Early Conversations Matter
Many organisations unintentionally wait until problems become severe before taking action. Unfortunately, by the time performance issues, long-term absence, or emotional breakdowns occur, the situation is often much harder to manage.
Early conversations can make a significant difference.
When employees feel noticed and supported early, they are often more willing to discuss challenges before reaching crisis point. Even a simple, supportive conversation can help reduce feelings of isolation and encourage someone to seek further help if needed.
Importantly, these conversations should focus on wellbeing rather than assumptions. Instead of saying, “You seem mentally unwell,” a better approach may be:
“I’ve noticed you don’t seem yourself lately. Is everything okay?”
This creates space for dialogue without judgement or pressure.
Building a Workplace That Supports Mental Health
Recognising the signs of poor mental health is only one part of the solution. Organisations also need systems, training, and culture that support appropriate action afterwards.
This is why many workplaces are now investing in mental health awareness training and practical response training such as Mental Health First Responder programmes. These programmes help employees and managers feel more confident identifying concerns, starting supportive conversations, and understanding when to escalate situations appropriately.
Importantly, effective workplace mental health support should never rely on a small number of individuals carrying the emotional burden alone. Instead, organisations benefit most when awareness, confidence, and responsibility are shared more broadly across teams.
Creating a mentally healthier workplace is not about turning managers into counsellors. It is about helping people recognise concerns early, respond calmly, and ensure employees know where support is available.
Mental Health Is a Workplace Responsibility
Mental health challenges are increasingly common across modern workplaces. According to Health and Safety Executive, work-related stress, depression, and anxiety continue to account for a significant proportion of work-related ill health cases in Great Britain.
Ignoring the warning signs does not make the problem disappear. In many cases, it simply delays support until the impact becomes more serious for both the individual and the organisation.
By learning to recognise the signs early and creating an environment where employees feel safe discussing wellbeing, organisations can build stronger teams, healthier cultures, and more sustainable performance over time.
Mental health is not just a personal issue. In today’s workplace, it is a leadership, culture, and organisational responsibility.
Take the Next Step
If your organisation wants to strengthen its approach to workplace mental health, now is the time to move beyond awareness alone.
Mental Health First Responder training can help your teams feel more confident identifying concerns, responding appropriately, and supporting colleagues in a safe and practical way.