OSHA's generally requires employers to take the following precautions to prevent fall-related accidents except Guard every floor hole into which a worker might accidentally fall Provide guardrails and toeboards, regardless of height, to prevent workers from falling onto or into machines, equipment, vats, etc. Provide a guardrail and toeboard around all open-sided platforms, floors, or runways that are four feet or more above the ground or the next level Provide a guardrail and toeboard around all open-sided platforms, floors, or runways that are six feet or more above the ground or the next level