Temporary Registered Doctors are granted permission from the Garda National Immigration Bureau to live and work in the State for up to 7 years. The changing short-term nature of their work patterns is such that this is the best way to facilitate them working here. For countries that are visa required the doctor must, in support of their application for a visa, be able to provide documentation from the Medical Council stating that he/she is eligible for temporary registration. They must also furnish a letter from a hospital in Ireland confirming an offer of employment. Finally they will need a passport valid for at least 12 months. By the end of 7 years they must have passed an examination to obtain full registration with the Medical Council. Failing full registration they must leave the State.