The government is trying to stamp out illegal workers and has, therefore, changed the law with regard to tourist visas. Unless you are from one of the 34 privileged countries (see the Types of Visas section), your tourist visa will only be valid for 30 days and cannot be renewed. You will not be able to do a ‘visa run’ to a neighboring country; you must return to your home country. You should then contact your local UAE embassy or consulate.
Visitors from the 34 privileged countries can renew their visas by going to the General Directorate of Residency and Foreigners Affairs (DNRD) which is located in the Al Jaffliya area Next to Bur Dubai Police Station in Bur Dubai. A location map is available on the DNRD website (http://www.dnrd.gov.ae/DNRD/Profile/Organizational%20Structure/Head%20office%20location). The application must be made in person. Appointments are not necessary. Further information can be obtained from the DNRD website (http://www.dnrd.gov.ae/DNRD?lang=en-GB) or by phoning the DNRD on 04 398 0000 or 04 313 9999.
When your residence visa is renewed at the end of three years, you will have to go for the blood test again. You will need the same documentation that you gave for the original residence visa. As your sponsor, your employer will take care of the application.
Multiple- Entry Visa for Property Owners
After six months you will have to leave the UAE before you will be allowed to get another visa. There is some inconsistency in official information about the length of time you will have to stay outside the country. Check with the General Directorate of Residency and Foreigners Affairs (DNRD) for up-to-date information (see above for contact details). You will be applying for a new visa rather than renewing your visa. You should contact an embassy or consulate outside the UAE to make the application.