Someone got hurt badly on your site or in your workplace. The ambulance came. The paperwork started. And now everyone is standing around not quite knowing what to do with themselves, the image of what just happened still fresh and unwanted in their heads.
That part rarely makes it into the safety plan.
The injured person gets treatment, investigation, rehabilitation pathways. The witnesses get a cup of tea and a vague suggestion to "talk to someone if needed." Irish workplaces are getting better at preventing harm. They are significantly worse at dealing with the psychological wreckage when prevention fails.
What Actually Happens to Witnesses
Witnessing a serious injury is a traumatic event. Not metaphorically. Physiologically. The brain processes threat and horror the same way whether the danger was to you or to the person beside you. Intrusive images, disturbed sleep, hypervigilance at work, avoidance of the location where it happened. These are normal responses to an abnormal event, and they can persist long after the physical scene has been cleaned up.
In physically demanding industries like construction, agriculture and manufacturing, there is also a particular culture around stoicism that makes this worse. People assume they should be over it quickly. They notice their own distress and feel embarrassed by it. So they say nothing, and the symptoms compound.
What employers often miss is that the psychological fallout spreads. It is not just the one or two people who watched the incident directly. It is the crew who arrived two minutes later. The first aider who responded. The supervisor who had to make the calls. The person in the office who took the phone call. Trauma after serious incidents affects teams differently than it affects individuals, and the ripple can be wide.
What Peer Support Actually Looks Like
Peer support does not mean appointing someone to run informal therapy sessions. It means creating conditions where people feel safe enough to acknowledge how they are doing, and where the people around them have enough knowledge to respond helpfully.
Be present, not performative. Checking in is not about asking "are you okay?" and accepting "grand" as an answer. It is about staying physically proximate, keeping communication open, and noticing changes. Has someone gone quiet who is normally chatty? Are they avoiding the area where the incident happened? Are they snapping at small things? These are signals.
Say the thing out loud. The worst version of peer support is everyone silently carrying their own distress because nobody wants to be the first to name it. A direct and calm "that was a bad one yesterday, how are you doing with it?" does more than a week of indirect checking. People need permission to say they are struggling. Someone else going first gives that permission.
Normalise the reaction. Colleagues sometimes make it worse with well-meaning comments like "sure he's going to be fine" or "at least it wasn't worse." That may all be true and it does not touch what a witness experienced. What does help is saying clearly that finding this hard is a normal response, not a weakness, not an overreaction.
Practical support beats philosophical support. Cover for someone who needs to step away. Offer to drive if they're shaky. Take on the tasks that require going back to the location before they are ready. Small, tangible actions land better than "I'm here if you need to talk."
When to Escalate to Professional Help
Peer support has a ceiling. You are not a therapist and you should not try to be one. The critical skill is knowing when what you are seeing has moved beyond what colleagues can hold.
Escalate when you notice any of the following persisting beyond two weeks after the incident. Significant changes in sleep or appetite. Withdrawal from colleagues and social contact. Inability to return to the area or task involved without acute distress. Increased use of alcohol. Talk of hopelessness or feeling like a burden to others. That last one requires immediate escalation, not a wait-and-see approach.
In Ireland, the route to professional support runs through the GP as a first port of call. Many employers also have access to an Employee Assistance Programme. If your workplace has one and your colleague does not know about it, tell them directly. Do not assume they will find it themselves. EAPs provide short-term counselling that is confidential and does not go on any record.
For acute trauma responses in the immediate aftermath, some occupational health providers and psychologists offer Critical Incident Stress Debriefing. The evidence on formal structured debriefing is mixed, but having a trained professional available in the days after a serious incident is worth the cost. A single hour spent with someone who knows trauma responses can prevent months of escalating distress.
The Supervisor's Role Is Not Optional
If you manage people, the people who witnessed something serious are still your responsibility after the incident is over. Not just their productivity. Their wellbeing.
Check in individually, not just as a group. Group check-ins allow individuals to hide behind collective "we're fine" answers. A one-to-one conversation, even brief, carries more weight. Make clear that taking time to speak with a professional is not a sign of weakness and will not affect how they are viewed. And follow through. If someone says they are struggling and you say "take whatever time you need," then pull them back onto a full rota the next day, you have made things worse.
There is also a legal dimension. The Safety, Health and Welfare at Work Act covers psychological harm. An employer who ignores foreseeable psychological impact following a serious incident is exposed, not just ethically but legally.
The Longer View
Workplaces that handle the aftermath of incidents well do something specific. They treat the psychological response as part of the incident, not a footnote to it. The investigation covers what happened physically. The recovery process covers what it did to the people who were there.
That framing shift matters. It signals that the organisation considers the whole person, not just the liability exposure. And it builds the kind of trust that makes people report near misses the next time, because they believe the organisation will respond to them rather than just manage them.
People who witness serious harm at work do not forget it. The question is whether they carry it alone or whether the people around them knew what to do.
