Something is off. Your normally funny, engaging coworker has been quiet and less talkative. The reliable team player starts missing deadlines. Emails from a leader go unanswered. At first, it seems like just a rough week—but then the pattern continues. You try not to ask too many questions and when you do, they often hide behind “I'm fine" and forced smiles.

For too long, mental health has been a taboo topic in the workplace. Many employees have suffered in silence, afraid of being judged or misunderstood. The stigma surrounding mental health has led to a culture where struggles are hidden rather than addressed, leaving individuals feeling isolated and unsupported.

But the reality is mental health challenges affect everyone at some point. And they are not just individual struggles; they impact teams, workplace culture and productivity. Recognizing the signs in a coworker is not about overstepping boundaries but about fostering a culture of empathy and care.

Here are five signs that a coworker may need mental health support:

1) Noticeable changes in behavior or mood. One of the clearest indicators that a coworker may be struggling with their mental health is a sudden or drastic change in behavior. If someone who is usually outgoing becomes withdrawn or a typically calm individual starts displaying irritability, it may signal an underlying issue. A shift in demeanor can indicate anything from stress and anxiety to depression or burnout. If you notice a colleague exhibiting these behavioral changes consistently, consider checking in on them.

2) Decline in work performance and engagement. While everyone has off days, a noticeable drop in productivity, focus or enthusiasm for work tasks may indicate mental health struggles. If a previously high-performing employee begins to miss deadlines, produce lower-quality work or disengage from team discussions, it may be due to emotional distress or due to being overwhelmed.

3) Physical symptoms and increased fatigue. If your coworker frequently complains of feeling tired, experiences sudden weight changes or appears physically unwell without a clear medical reason, they may be struggling with mental well-being. Mental health struggles often manifest physically. Stress, anxiety and depression can take a toll on the body, leading to chronic fatigue, headaches and other unexplained health issues.

4) Increased isolation and avoidance of social interaction. People struggling with mental health issues often withdraw from social situations, even if they were previously engaged and social at work. If a coworker starts avoiding team lunches, skipping meetings or isolating themselves at their desk, they may be struggling with anxiety, depression or burnout.

5) Expressions of being overwhelmed or of hopelessness. Sometimes, colleagues may express feelings of extreme stress, frustration or even hopelessness. Statements like “I can't handle this anymore," “Nothing I do matters" or “I feel completely burned out" should never be ignored.

May Is Mental Health Awareness Month

How can you help? Recognizing the signs is just the first step. If you notice a coworker struggling, here are some ways you can offer support:

Check-in with them privately. A simple “How are you doing?" can go a long way.

Listen without judgment. Allow them to share without offering unsolicited advice.

Be patient and understanding. Sometimes, just knowing someone cares can make a huge difference.

Encourage professional help. If appropriate, suggest they speak with HR or a counselor.

Foster a supportive work culture. Advocate for mental health awareness in the workplace.

Brenden Corr is co-founder of Project 55, a new initiative launched to empower individuals and organizations to improve mental health outcomes in the workplace.