Event Risk Assessment: Build a Risk Register and Contingency Plan

An event risk assessment helps you think clearly about what could go wrong before it happens, so you can prevent the avoidable problems and respond calmly to the rest. It doesn't need to be complicated. In this guide you'll learn how to identify hazards, score them by likelihood and impact, record them in a risk register, write contingency plans for common scenarios, and set up clear roles and escalation for the day.

This article is general information, not safety, legal, or insurance advice. Requirements differ by country, venue, and event type, so always check local regulations and venue rules, and involve a qualified professional for anything beyond a small, low-risk event.

#Why an event risk assessment matters

Most event problems aren't surprises. Bad weather, a late speaker, a crowded entrance, and a Wi-Fi outage are all predictable in general, even if you can't predict which one will happen. A risk assessment turns that general worry into a short list of specific actions.

It also helps in practical ways:

• Venues, local authorities, and insurers may ask to see one
• It gives your team a shared understanding of priorities
• It speeds up decisions on the day, because the thinking is already done
• It shows stakeholders that the event has been planned responsibly

If you want the wider case for planning, see why event planning is important.

#Step 1: Identify hazards and risks

A hazard is something with the potential to cause harm or disruption; a risk is the chance that it actually does, and how badly. Start by listing as many as you can, then trim.

#Ways to find risks

1. Walk the attendee journey. From arrival and check-in to sessions, catering, toilets, and departure, ask what could go wrong at each stage.
2. Walk the venue. Look at entrances, exits, stairs, cables, lighting, and outdoor areas. Our guide on how to choose an event venue includes a site-visit checklist.
3. Go through your run of show. Every line is a potential failure point. See how to write a run of show.
4. Ask your suppliers and venue. They've seen many events and know their own weak spots.
5. Review past events. Notes, incident logs, and feedback from earlier events are a goldmine.

#Common categories

• Safety: crowding, slips and trips, medical emergencies, fire
• Operational: power or Wi-Fi failure, AV problems, supplier no-shows, late setup
• People: speaker cancellations, staff illness, difficult guests
• External: severe weather, transport strikes, nearby incidents
• Financial and reputational: low ticket sales, overspend, data mishandling

The UK Health and Safety Executive's guidance on managing risks explains the basic process clearly and is useful wherever you are.

#Step 2: Score likelihood and impact

Not every risk deserves equal attention. Score each one on two scales, then multiply.

• Likelihood: 1 (very unlikely) to 5 (almost certain)
• Impact: 1 (minor inconvenience) to 5 (severe harm or event cancelled)

These bands are a common convention, not a standard; adjust them to your organisation. The value of scoring is that it forces a conversation: if two people score the same risk very differently, you've found something worth discussing.

#Step 3: Build a risk register

A risk register is a table that records each risk, its score, the controls, and who owns it. Keep it in a shared spreadsheet so it stays current. Here's an example with illustrative scores for a 300-person indoor conference.

Review the register at each planning milestone and again in the final week, when the forecast and final numbers are known.

#Step 4: Write contingency plans

A contingency plan is the "if this, then that" for your highest-scoring risks. Keep each one short enough to read in a minute.

#Weather

Decide in advance the trigger for moving outdoor elements inside, who makes the call, and by when. Have covered space for queues, and tell attendees what to bring through your event communication plan.

#Speaker no-show

Keep contact details for every speaker and their assistant. Have a backup: a colleague who can deliver the talk, an extended panel, or a longer Q&A. Write the swap into the run of show so AV knows what changes.

#Venue power or Wi-Fi outage

Know where the fuse board is and who can reset it. Keep power banks for check-in devices and presenter laptops. For entry, use check-in tools that keep working without a connection. ScanSync's iPhone app scans offline and syncs later without double counting; our guide to offline event check-in covers how to prepare.

#Overcrowding at entry

Crowding at the door is both a comfort and a safety issue. Plan lanes and staffing for your peak arrival window, not the average, and watch the live check-in count so you can open extra lanes early. See how to reduce event check-in lines. For large public events, the HSE's event safety guidance covers crowd management in more depth, but always follow local authority requirements.

#Medical incident

Know who your first aiders are, where the first-aid kit and any defibrillator are kept, and the exact address and access route for emergency services. Brief all staff on the first two steps: call for help, and keep the area clear.

#Roles, escalation, and official guidance

#Clear roles

Every risk needs one owner. On the day, also name:

• An event lead with authority to delay, change, or stop the programme
• A safety lead or venue contact who coordinates with venue security and emergency services
• Area leads (check-in, stage, catering) who handle problems in their zone

A simple responsibility matrix can help larger teams make this explicit.

#Escalation

Write a simple ladder: area lead handles it if they can; if it affects the programme or safety, they call the event lead; if anyone is at risk, call emergency services first and inform the event lead after. Put the names and numbers at the top of the run of show.

#Insurance and safety rules

Insurance needs, licensing, and safety obligations depend on where you are and what you're running. Ask your venue what they require, check with your local authority, and speak to a qualified insurance or safety professional. For general business continuity ideas, Ready.gov's business guidance is a helpful starting point.

#Summary

An event risk assessment is a structured way to list what could go wrong, score each risk by likelihood and impact, and focus your effort on the ones that matter. Record everything in a risk register with an owner, prevention steps, and a contingency plan. Write short, specific plans for common scenarios like weather, speaker no-shows, outages, entry crowding, and medical incidents. Finally, agree roles and escalation in advance, and check local rules and qualified advice for safety and insurance.

#Next steps

Add your top five risks to a shared register today, and schedule a review in your event planning checklist. If entry is on your list, you can create a free account and test offline check-in with your own guest list before the day.