Ears are an important organ of your body and you can perform a lot of tasks only because you are able to hear. Your work might involve plenty of sounds in various forms and types that may affect your power of listening. Ear plus keep your ears protected and even in surroundings with heavy sound keep a control of how much you hear.  http://workwarehouse.weebly.com/1/post/2014/03/protect-your-ears-with-safety-ear-plugs.html