Which of the following is important for safety when working in elevator shafts?

Using appropriate fall protection equipment is essential for safety when working in elevator shafts because these environments can present significant hazards that include the risk of falling from heights. Elevator shafts are often deep and can have various levels, making it critical for workers to have proper equipment, such as harnesses and lanyards, to prevent falls.

Fall protection equipment is designed to safeguard workers by arresting their fall if they slip or lose their footing. The use of such equipment is not just a regulatory requirement but a fundamental aspect of ensuring worker safety in environments where heights are involved.

While other options may contribute to safety practices, they do not address the immediate and critical danger of falling. For instance, wearing rubber gloves may provide electrical insulation, good ventilation ensures air quality, and keeping the elevator doors locked can prevent unauthorized access. However, they do not mitigate the risk associated with working at heights in a shaft. Therefore, appropriate fall protection equipment remains the most crucial factor for safe operations in elevator shafts.