Not being able to hear your surroundings (people shouting, sounds of danger, malfunctioning equipment) is pretty dangerous in a shop. You do you, but I wouldn't let anyone wear earbuds, especially noise cancelling ones in my shop.
Not being able to hear your surroundings (people shouting, sounds of danger, malfunctioning equipment) is pretty dangerous in a shop. You do you, but I wouldn't let anyone wear earbuds, especially noise cancelling ones in my shop.