What type of safety measure is recommended when working at heights?

Using fall arrest systems is considered a crucial safety measure when working at heights. These systems are designed to prevent a person from falling or to minimize the distance and impact of a fall. Fall arrest systems typically include harnesses, lanyards, and anchor points that secure the worker to a stable structure, providing both safety and mobility while working at elevated positions.

This approach promotes worker safety by ensuring that if a fall occurs, the system will catch the person before they hit the ground, thereby significantly reducing the potential for severe injuries or fatalities. This is especially important in construction and maintenance tasks where the risk of falling from heights is prevalent.

Other options, such as wearing heavy gear, climbing without any assistance, or avoiding protective equipment, do not contribute effectively to safety and could lead to increased risk of accidents while working at heights. Heavy gear can limit mobility and comfort, climbing without assistance can increase the likelihood of hazards, and avoiding protective equipment directly contradicts safety protocols typically established in work environments at heights.