Which of the following is a prerequisite for accessing overhead areas using ladders?

Accessing overhead areas using ladders requires proper training in ladder usage. This training ensures that workers understand how to safely operate ladders, including how to set them up correctly, maintain stability, and ensure their personal safety while working at heights. Proper training also covers recognizing potential hazards associated with ladder use, which is crucial for preventing accidents.

While other options may relate to various safety procedures or protocols, the specific and essential requirement for using ladders safely is the necessary training. This training provides the foundational knowledge and skills required to mitigate risks effectively, thus ensuring the safety of the worker and those around them.