Work at height means work in any place where a fall could cause injury — including below ground level.
Plan the work, use the right equipment, train people, and inspect equipment. Avoid fragile surfaces.
A risk assessment and a method that prefers collective protection over PPE alone are the normal approach.
Check HSE’s work-at-height topic pages for ladders, scaffolds and MEWPs.
Official sources
How Pure Safety helps
Pure Safety can hold an observation or incident and the actions that close it out. Work-at-height permit screens are not a shipping product feature in the current Safety trial.
Open Pure SafetyAll guides · RIDDOR · COSHH · CDM 2015