There is no definitive answer to this question as it depends on a variety of factors, including the type of headphones you are using and how often they are used. However, some people have reported that over-ear headphones can damage their ears if they are used for an extended period of time or if they are not properly maintained. If you are concerned about this possibility, be sure to consult with your headphone manufacturer or a qualified ear doctor to learn more about the best way to use your headphones.