Temporary worker status applies to individuals who want to work in the United States on a temporary basis and need a visa based on the job they will perform. In most cases a temporary worker visa requires the approval of the Department of Homeland Security. The H-1B Visa is for individuals who will be performing governmental research or be involved with the Department of Defense. H-1C is the visa issued to foreign born nurses who have the qualifications to work in the medical field in the United States. This visa is issued for a term of 3 years. H-2A visas pertain to agricultural workers. This type of work is usually temporary or seasonal. H-2B is issued for seasonal or temporary work that is not agricultural in nature. An L Visa covers inter-company transfers but requires that the individual be employed for at least 1 year in his home country by the company before applying for temporary worker status. And, the O-1 Visa is given to individuals who excel in the fields of art, science, music, literature, math, business, athletics, or in film and television.