True or False: All employees must be protected from cave-in hazards when entering or exiting the area protected by shields.

All employees must indeed be protected from cave-in hazards when entering or exiting an area protected by shields. This requirement is crucial for maintaining a safe working environment in excavation operations where the potential for cave-ins exists. The use of protective measures, like trench shields, is mandated to prevent injuries caused by falling soil or debris, which can be exceedingly dangerous. This protection extends to all workers involved in the excavation, ensuring their safety at all times.

While certain types of trenches or specific conditions might have different requirements, the blanket rule is that the safety of all employees in these areas is paramount, making the requirement universally applicable regardless of the trench characteristics. Hence, the statement is true.