Everyone in the workplace should learn about the warning signs for suicide and how to spot if a colleague could be at risk. If you're concerned about someone at work, start by asking if they're OK. Offer to go with them to speak to a manager, or to drive them to see a health professional if they need it.
If the situation is urgent and you're concerned that the person is in immediate danger, don't leave them alone, unless you are concerned for your own safety. Call the person’s doctor, mental health crisis service or dial 000 and say that the person’s life is at risk.
For more tips on how to start a conversation, check out beyondblue's Have the conversation resource.