Have you noticed that a colleague doesn't quite seem themselves? Do they seem distressed or extremely withdrawn? Are you concerned that they may be at risk of suicide? It can be hard to know how to respond, but there are positive things that you can do to support them.
If you or someone in your workplace is in crisis and you need immediate support, call emergency services (triple zero – 000), contact your doctor or local mental health crisis service, or go to your local hospital emergency department.