Heinrich Safety Pyramid Analysis Slide for PowerPoint & Google Slides

Heinrich Safety Pyramid Analysis Slide

A four-tier pyramid diagram based on Heinrich’s accident ratio theory. Shows the relationship between workplace incidents at different severity levels: 2 major disabling injuries at the top, 50 minor incidents (first aid), 350 near misses, and 2,500 lower-risk events at the base. Each tier is color-coded red at the top, orange and yellow in the middle, green at the base.

A causes column on the right side lists contributing factors alongside the pyramid: action-human factor, habit-human factor competency, fault of the person, awareness of safety norms and environmental factors, safety and security information shared, SOP availability, and following safety rules. All text and numbers are editable.

What is the Heinrich Safety Pyramid?

Herbert William Heinrich proposed in 1931 that for every major workplace injury, there are a predictable number of minor injuries, near misses, and unsafe conditions underneath it. The ratio he identified 1 major accident for every 29 minor injuries and 300 near misses became the foundation of modern workplace safety analysis.

The idea is simple: if you reduce the base of the pyramid (unsafe acts and near misses), you reduce everything above it. Most safety programs today are built on this principle. Tracking and addressing the small stuff before it turns into the big stuff.

Who Uses Heinrich Pyramid Presentations?

EHS (Environment, Health & Safety) managers during safety reviews and annual audits. Operations leads presenting incident data to senior management. Safety officers running toolbox talks and site briefings. Compliance teams reporting to regulatory bodies. HR departments building safety training programs for new hires.

Also used by insurance risk assessors, occupational health consultants, and workplace safety trainers in industries where incident tracking is mandatory construction, manufacturing, oil and gas, mining, logistics, healthcare, and chemical processing.

How to Use This Template

Plug in your actual incident numbers from your reporting system. Replace the default 2/50/350/2500 figures with your organization’s real data. Update the causes column on the right to reflect the specific contributing factors you’ve identified in your own workplace assessments.

Use it in monthly safety meetings to show trends. Include it in annual EHS reports to visualize where incidents are clustering. Add it to training decks to explain why near-miss reporting matters most workers don’t connect their daily shortcuts to the major injuries at the top of the pyramid until they see the numbers laid out this way.

You can also adapt the pyramid structure beyond safety. The same ratio concept applies to quality defects (few major defects, many minor ones), customer complaints (few escalations, many low-level issues), or IT incidents (few outages, many minor bugs). Change the labels, keep the structure.