If you value your brain/head/life, wear a hard hat on any active work site. It protects your noggin from: fixed objects and equipment, falls, and it also stands out.
Hard hats also protect you from falling objects, which as this video eloquently demonstrates, can be disastrous if you’re not protected.
Just look at the difference a mere 10 ft makes on the force of impact from just a 1 pound object.
