Protective Headwear One serious blow to the head can leave an otherwise strong and healthy person permanently brain-damaged or disabled for life. At best, a blow on the head can give you a whopper of a headache. Therefore, it is crucial to protect it from the impact of falling objects, painful bumps, and in some cases, from high-voltage electric shock. ANSI-approved head protection is generally required when there is "a potential for head injury from falling or moving objects" and where employees' heads are exposed to electricity. Hard Hats: The American National Standards Institute has established guidelines for helmets, the latest of...