How many risers must stairways have before a handrail is required?

In the context of stairway safety as outlined by OSHA regulations, handrails become a requirement when stairways have four or more risers. The purpose of handrails is to provide support and stability for individuals using the stairs, helping to prevent falls and improve overall safety. When there are fewer than four risers, the need for a handrail is not mandated because the risk associated with a short flight of stairs is considered lower. Therefore, the presence of four or more risers indicates a more significant elevation change, which justifies the installation of a handrail to enhance safety measures for workers and visitors navigating the stairway. This regulation is part of the broader framework of ensuring safe working conditions on construction sites.