Overstaying a Greece Visit Visa is a serious violation of Schengen regulations and can have severe consequences. You may be detained, fined, or deported from the Schengen area. An overstay record can result in a ban from re-entering the Schengen zone for a specified period and can significantly impact your future visa applications to Greece and other Schengen countries. It is essential to ensure that your departure from the Schengen area occurs before your permitted stay expires. Always keep a careful track of your entry and exit dates to avoid any unintentional overstays.