OSHA 29 CFR-1910: OSHA considers arc flash to be a "recognized hazard" for which appropriate safety standards (most importantly, NFPA 70E) exist. While OSHA does not mandate that employers follow NFPA 70E, failure to do so may result in a citation in the event of an arc flash incident which NFPA 70E compliance could have prevented. In addition, various states have OSHA state plans which mandate compliance with NFPA 70E. Employers should check the relevant state codes, as considerable variation exists.