Which of the following is true when using an aerial lift with respect to the use of a body harness?

When operating an aerial lift, it is essential to use a body harness at all times to ensure worker safety. A body harness provides a secure point of attachment that can prevent the worker from being thrown from the lift in case of sudden movements or if the lift tips. This is especially important because aerial lifts elevate workers to significant heights, increasing the risk of falls. The regulation and safety standards emphasize that proper fall protection measures, including the use of a body harness, must be adhered to consistently during operation to minimize the risk of injury.

Using a body harness is not just a recommendation but a standard safety practice, reflecting the commitment to maintaining a safe working environment. Other options imply variability or conditions under which harnesses may not be needed, which contradicts the universal requirement for safety in elevated work situations.