The L-1A non-immigrant classification enables a U.S. employer to transfer an executive or manager from one of its affiliated foreign offices to one of its offices in the United States. This classification also enables a foreign company which does not yet have an affiliated U.S. office to send an executive or manager to the United States with the purpose of establishing one. Only those companies that exactly meet the United States Citizenship and Immigration Service's definitions of a parent, branch, subsidiary or affiliate qualify to petition for an L-1 visa. A manager or executive may remain in the United States for up to 7 years, while a specialized knowledge employee may remain for up to 5 years. The dependants of an L-1A visa are granted an L2 visa with work authorization. Active foreign business with at least 6 registered employees is required.