O-1 temporary workers are defined as persons who possess extraordinary ability, who are among the small percentage of individuals who have risen to the very top of their field of endeavor, and who are coming to the United States to continue work in the area of extraordinary ability on a temporary basis. The O-1 status can be used to bring temporary faculty members, researchers, consultants, administrators, or individuals engaged in a variety of professional-level activities to the United States. To qualify for O-1 status, the alien must possess skills and abilities that evidence they are among the small percentage of individuals who have risen to the very top of their field of endeavor. The O-1 is employer specific; the employee may only work for the employer who filed the O-1 petition and can only perform the job included in the petition. (Concurrent employment is possible, if each employer has an approved O-1 petition.) The spouse and unmarried minor (under age 21) children of an O-1 worker are granted O-3 immigration status. Applications for O-3 classification should be included in the petition for the H1B worker, if the dependents are in the U.S. Filing instructions are on the back of the O-1 Request Form. Dependents in O-3 status are not eligible for employment.