Laborer's working with phosphorus suffer from a disease in which bones decay. It is known a

Phossy Jaw disease, also known as phosphorus necrosis of the jaw. It is commonly observed  that workers who are in constant contact with white or yellow phosphorous and do not take appropriate protective measures. This disease happens because phosphorus damages the jawbone. This is a very harmful illness and requires surgery to remove the affected jaw. Otherwise, death will result due to the organ failure.