HSA prosecution records and ESRI workplace injury data tell a consistent story: Irish work-at-height fatalities and serious injuries cluster around a small set of repeated mistakes. Same patterns, different sites. Knowing the patterns is half the prevention.
1. Standing on the top step of a stepladder
The mistake: "I just need an extra few inches."
The rule: Three points of contact, body within the stiles, no top step or top platform use.
The fix: Podium step or one rung taller ladder.
2. Reaching sideways from a ladder
The mistake: The painter, decorator, or installer extending an arm 2-3 metres laterally instead of stepping down and moving the ladder.
The rule: Belt buckle stays within the stiles.
The fix: Move the ladder. Every time.
3. Using a domestic-grade DIY ladder for trade work
The mistake: Trade contractor with an EN 131 Non-Professional ladder bought from a DIY chain.
The rule: Trade work requires EN 131 Professional class.
The fix: Spend the extra 60-80 euro for the right duty class.
4. Tying onto a handrail / vent / soil pipe
The mistake: Improvised "anchor" that has never been load-tested.
The rule: EN 795 anchors only - 12 kN minimum capacity.
The fix: Permanent anchor, deadweight system, or do not work that section.
5. No rescue plan
The mistake: Harness in use, anchor in place, but no descender on site, no named rescuer, no Eircode for emergency services.
The rule: A worker hanging in a harness has 15-20 minutes before suspension trauma is life-threatening.
The fix: Rescue device on site, named rescuer per shift, Eircode of access posted.
6. Wrong fall clearance
The mistake: 2-metre lanyard used at a working height of 4 metres - the system needs 6+ metres of free fall to deploy.
The rule: Lanyard length + deployment + worker height + safety margin must be less than the fall distance.
The fix: Restraint configuration, or self-retracting lifeline, or change the work method.
7. MEWP without harness on a boom lift
The mistake: Boom lift basket with no harness clipped to the internal anchor.
The rule: Catapult ejection from a struck boom is a real risk - harness required on all boom lifts.
The fix: Anchor inside basket, EN 795 marked, harness short enough to keep worker inside the basket.
8. Moving a tower scaffold with workers on it
The mistake: "Just shifting it 2 metres".
The rule: Never move a tower with people on board, regardless of distance.
The fix: Climb down, move, climb up. Or invest in a self-propelled platform.
9. No edge protection on flat roofs
The mistake: Worker assumes a flat roof feels safe.
The rule: Most flat-roof falls happen within 2 metres of the edge while the worker is concentrating on the task.
The fix: Permanent guardrail, demarcation line + restraint, or temporary edge protection.
10. Walking on fragile rooflights
The mistake: Worker assumed a GRP or polycarbonate panel was a metal sheet.
The rule: Treat every roof element as fragile until proven otherwise.
The fix: Crawl boards, permit-to-work, restraint configuration.
11. Expired or missing certificate
The mistake: Worker shows up with a cert that expired 2 months ago - or no cert at all.
The rule: Working at Heights Certificate valid for 3 years.
The fix: Online Working at Heights Refresher Course in 45 minutes the same day. Team rates for whole crews.
12. Risk assessment is generic, not site-specific
The mistake: Same A4 page used on every site, with the previous client's name still printed at the top.
The rule: Every site, every task, specific assessment.
The fix: 20-minute site-specific assessment as part of the project mobilisation.
The pattern behind the patterns
Look at all 12 above. Almost every one of them is a habit problem, not an equipment problem. Habit problems are training problems. The Working at Heights Course online drills the habits in 45 minutes. After that, the toolbox talks reinforce them every shift.
FAQs
Why are the same mistakes still happening?
New workers, deadline pressure, undertraining, and the human tendency to take shortcuts on familiar tasks. The HSA Insp data shows the patterns are remarkably stable across decades.
Are these mostly small business issues?
No. Major contractors record incidents at lower rates per worker but still see them. Sub-contractor governance is the most common contributing factor on big sites.
What single intervention has the biggest impact?
Universal Working at Heights Certificate coverage + daily toolbox talks. Insurance data shows roughly 50% reduction in incident frequency for businesses that do both.
Stop the patterns starting with your team. Start the Working at Heights Course online, 45 minutes, instant Working at Heights Certificate, 3-year validity.
