Safety Codes:

119(1) “An employer must ensure that every worker can enter a work area safely and leave a work area safely at all times.”
- O H S A

“Unprotected side or edge which is 6 feet (1.8 m) or more above a lower level shall be protected from falling by the use of guardrail systems.”               1926.501(b)(2)-OSHA

121“(2) “An employer must ensure that the surface of a  walkway, runway or ramp has sufficient traction to allow workers to move on it safely” - O H S A