The OSHA 6-foot rule refers to the requirement for fall protection in the construction industry. According to OSHA Standard 29 CFR 1926.501(b)(1), fall protection must be provided when employees are working on a walking or working surface with an unprotected side or edge that is 6 feet or more above a lower level.  This can include activities such as roofing, scaffolding, and steel erection. The protection can be provided through guardrail systems, safety net systems, or personal fall arrest systems.