Which safety measure should always be in place when working at height?

The implementation of a fall protection system is crucial when working at height because it serves as the primary safeguard against falls, which can result in serious injuries or fatalities. A fall protection system includes equipment such as harnesses, lanyards, and guardrails that are designed to arrest falls or prevent them altogether. This system is essential in mitigating risks associated with working at elevated positions.

Simply having first aid kits available is important for responding to emergencies, but it does not prevent accidents from occurring. While ensuring that all workers are experienced is beneficial for overall safety and competence, it cannot fully eliminate the risk of falls; thus, it should not be viewed as a substitute for a dedicated fall protection system. Moreover, using lighter tools can enhance maneuverability and reduce fatigue, but this consideration does not address the critical need for fall protection. Therefore, establishing a robust fall protection system is the foundational safety measure that must always be in place when performing tasks at height.