What to Do in the First 24 Hours After a Workplace Incident

The first 24 hours after a workplace incident are the most important. Evidence degrades. Witnesses' memories shift. Scenes get cleaned up. Notification deadlines start running. What you do — and don't do — in the hours immediately following an incident shapes everything that comes after.

This guide covers exactly what to do, in order, in the first 24 hours after a workplace incident.

Immediate Response (First 30 Minutes)

1. Ensure the injured person receives appropriate care. This is always the first priority. Call emergency services if required. Provide first aid within your team's training and capability. Do not move an injured person unless they are in immediate danger.

2. Make the area safe. If the hazard that caused the incident is still present and poses a risk to others, control it immediately. This might mean isolating equipment, cordoning an area, or stopping a process. Making an area safe does not mean cleaning it up — the scene needs to be preserved for investigation.

3. Preserve the scene. Before anything is moved, cleaned, or repaired — take photographs. Photograph the full scene, the specific hazard, any equipment involved, and the immediate environment. These photographs are often the most important evidence in any subsequent investigation or claim, and they cannot be recreated.

Notification (First 2 Hours)

4. Notify OSHA if required. For severe injuries — fatalities, in-patient hospitalisations, amputations, or loss of an eye — OSHA requires notification within specific timeframes:

• Fatality: report to OSHA within 8 hours
• In-patient hospitalisation, amputation, or eye loss: report within 24 hours

You can report online at osha.gov, by phone to your nearest OSHA office, or via the OSHA 24-hour hotline. These are federal requirements that apply regardless of your business size or industry. State-plan states may have additional or different requirements — check your state OSHA program if applicable.

5. Notify your workers compensation insurer. Most workers compensation policies require prompt notification of workplace injuries. Check your policy — many require notification within 24 hours of a work-related injury. Late notification can affect claim processing.

6. Notify relevant internal parties. Depending on your business structure, this may include senior management, HR, or your safety officer if you have one.

Evidence Collection (First 24 Hours)

7. Collect witness statements promptly. Witness accounts are most accurate immediately after an incident. Collect written or recorded statements from anyone who saw what happened or was in the area. Keep statements factual — what they saw, heard, and observed — rather than asking for interpretations or opinions about cause.

8. Secure relevant records. Identify and secure records that may be relevant to the investigation before they are altered or lost:

• Maintenance records for any equipment involved
• Training records for the injured worker and relevant procedures
• Safe work procedures or method statements for the task being performed
• Inspection records for the area or equipment
• Shift records, rosters, or hours-of-work records if fatigue is a potential factor
• CCTV footage if available — this is often overwritten within 24–72 hours

9. Log the incident formally. Record the key facts: date, time, location, who was involved, what task was being performed, the nature of the injury or event, and the immediate response. This becomes the foundation of your formal investigation.

Starting the Investigation (Within 24 Hours)

10. Start the investigation — don't wait. The formal investigation should begin within 24 hours of the incident. This does not mean it needs to be complete within 24 hours — complex investigations take time. It means the structured process of evidence collection, timeline reconstruction, and root cause analysis should begin while evidence is fresh and accessible.

For small businesses without a safety team, "starting the investigation" means having a structured process to follow. Without a defined workflow, the investigation gets deferred until the immediate pressure subsides — which is usually too late to capture the best evidence.

What Not to Do in the First 24 Hours

• Don't clean up the scene before photographing it. Once it's gone, it's gone.
• Don't repair or remove equipment involved in the incident before it has been examined and documented.
• Don't determine blame or fault in the immediate aftermath — focus on facts, not interpretation.
• Don't make statements about liability to the injured worker, their family, or any third party before you have taken advice.
• Don't delay OSHA notification for severe injuries — the clock starts from when you know about the incident, not when you decide to report.
• Don't rely on memory — document everything in writing as it happens.

After 24 Hours

Once the immediate response and evidence collection are underway, the investigation continues with timeline reconstruction, root cause analysis, and recommendations. The quality of that analysis depends almost entirely on the quality of the evidence collected in the first 24 hours.

A structured investigation process — covering all six steps from incident logging to report generation — gives you a defensible record regardless of whether the incident results in an insurance claim, a regulator inquiry, or nothing at all. The investment of time in the first 24 hours is the most important safety action a small business can take after an incident occurs.

Note: This article provides general guidance on post-incident response. It does not constitute legal advice. OSHA notification requirements and workers compensation obligations vary by state and circumstance — consult OSHA's guidance and your insurer or a qualified professional for your specific situation.