Walking-working surfaces pertains to floors, ladders, stairways, runways, dock boards, roofs, scaffolds, and elevated work surfaces and walkways. According to OSHA, "To protect workers from hazards associated with those surfaces, particularly hazards related to falls from elevations, the final rule updates and revises the general industry Walking-Working Surfaces standards (29 CFR part 1910, sub-part D)." The final rule provides employers with greater flexibility in choosing a fall protection system, including guardrails and safety net systems, and addresses other areas such as Personal Protective Equipment (PPE) and the requirements for training employees on fall hazards and fall protection systems.