Mental health challenges at work are rarely obvious, and they don’t always look the way people expect. More often than not, the early signs are subtle shifts in behaviour rather than a clear signal that something is wrong.

Spotting them isn’t about making assumptions – it’s about noticing when something feels different from someone’s usual way of being.

Changes in usual behaviour

One of the clearest early indicators is a change in how someone normally shows up at work. A colleague who is typically engaged and talkative might become quieter in meetings, or someone known for their attention to detail may start making small mistakes they wouldn’t usually make.

These moments on their own don’t necessarily mean someone is struggling, but when they represent a shift from a usual pattern, they can be worth paying attention to.

Shifts in working patterns

Another sign can be a noticeable change in how someone works day to day. This might include staying online very late, replying to messages at unusual hours or consistently skipping breaks.

In some cases, people may also take on more work than usual, appearing overly available or reluctant to step back. While this can sometimes be linked to workload or pressure, it can also be a way of coping by staying constantly occupied.

Reduced confidence

Mental health challenges can often affect how people view their own performance. Someone who was previously confident in their decisions might start hesitating more, over-apologising or second-guessing themselves.

They may hold back from contributing ideas or avoid putting themselves forward in situations where they would normally be more active. These shifts can be gradual, but they often signal a change in how someone is feeling internally.