In which situations does OSHA require the use of a 5-point safety harness?

The use of a 5-point safety harness is specifically required by OSHA in high-risk situations where workers are exposed to falls or other hazards associated with heights and unstable surfaces. The situations outlined in the correct answer involve areas where workers are at significant risk of falling, such as when working from bucket trucks, climbing towers, navigating rooftops, or entering confined spaces.

In these scenarios, a 5-point safety harness provides essential support to prevent falls, securing the worker's body at five critical points for maximum safety and mobility. It ensures that, in case of a fall, the impact is distributed evenly across the body, reducing the risk of severe injury.

The other options do not typically involve the same level of risk. For instance, working in offices or from ladders generally does not require the same rigorous fall protection measures as those required when working at heights or in precarious conditions, which is why they do not meet OSHA's guidelines for the use of a 5-point safety harness.