In the UAE maximum period of time residents can stay out side is 180 days. As per UAE law if you are staying more than 6months or 180 days your visa will become invalid
After visa expiry foreign nationals should apply for new visa to renter UAE. But your current sponsor should officially cancel your expired visa
Important note: this tool is provided just to calculate your visa expiry date, its owners and employees do not accept any liability for any negative effects of any nature its use may have.