Many workplace teams approach working at height (WAH) with a simple instruction: wear a safety harness. That is incomplete. Fall prevention begins by questioning why the work must be done at height, whether collective protection is available, and what happens if a person falls.
Is every job below two metres automatically safe?
No. DOSH explains that Malaysian legislation does not give one universal definition of working at height. A fall through a floor opening or onto a dangerous surface may cause serious injury even at a lower elevation. The DOSH working-at-height guidance emphasises preventing falls by considering the actual risk, not relying on a simplistic height threshold.
Use a hierarchy of fall controls
- Avoid: Move inspection, cleaning or assembly work to ground level if reasonably practicable.
- Prevent: Use suitable permanent access, working platforms, guardrails and barriers to prevent a person from reaching an unprotected edge.
- Reduce consequences: Where falls cannot be prevented, select appropriate fall protection or arrest systems and plan rescue.
Assess the real work area
Review leading edges, skylights, brittle roof sheets, openings, weather, access routes, dropped objects, electrical proximity and other trades operating below. Inspect the supporting structure and verify that work platforms or temporary access equipment are appropriate for the load, environment and activity.
Choosing between ladders and work platforms
Ladders are not a universal substitute for a designed platform. Consider task duration, reach, force applied, need for two hands, stability and evacuation. Use suitable inspected equipment and prevent overreaching. Where the work requires materials handling or sustained activity, an appropriate work platform may provide better control.
Harnesses, anchorages and rescue
Where personal fall protection is justified, verify compatible equipment, anchorage suitability, fall-clearance calculations, inspection and user capability. Attaching a lanyard to an unverified handrail can introduce rather than solve a risk. A fall-arrest setup must include prompt rescue arrangements; calling an external emergency service without a realistic retrieval plan may be inadequate.
Practical example: servicing a rooftop unit
Rather than beginning with PPE selection, assess whether the equipment can be relocated, whether guarded access is available, how materials reach the roof and whether fragile areas can be isolated. Address other hazards such as electrical isolation and heat exposure. The WAH risk assessment should connect to any relevant permit-to-work and emergency arrangements.
What should WAH training demonstrate?
Participants should recognise fall hazards, select appropriate controls, inspect access equipment, understand fall protection limitations, raise stop-work concerns and explain the emergency response sequence. Practical activities should be matched to the individual’s role and approved site equipment.
Explore Working at Height training or discuss a site-specific session.
Reference
DOSH: Working at Heights and applicable current legislation and worksite procedures.
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