When it comes to workplace safety, especially in industries like oil and gas, electrical utilities, and welding, flame-resistant (FR) coveralls are often the first line of defense. These garments are engineered to protect workers from flash fires, electric arcs, and other thermal hazards that can cause severe injuries in a matter of seconds. But here’s the catch—wearing FR coveralls correctly is just as important as wearing them at all. And one area where workers often make critical mistakes is layering.