DANGER HARD HATS, EAR AND EYE PROTECTION REQUIRED BEYOND THIS POINT - Alert anyone entering that work area requires the use of proper PPE. Sign lists safety protection required on job site. Red DANGER header grabs attention. Traditional OSHA-style signs, tags and labels are the most widely recognized design format in the industry. Danger header indicates a hazardous situation that, if not avoided, will result in death or serious injury.