Notice of Eligible H-2A and H-2B. DHS has issued note of the 85 countries whose nationals are eligible to participate in the H-2A program and the 86 countries whose nationals are eligible to participate in the H-2B program for the coming year. H-2A visas are for nonimmigrants who want to work in the agricultural sector in the United States for a limited time. The H-2B nonimmigrant visa program allows U.S. employers to temporarily hire nonimmigrants for nonagricultural jobs in the U.S. Designation of Countries Whose Nationals Are Eligible To Participate in the H-2A and H-2B Nonimmigrant Worker Programs. The H-2B nonimmigrant program permits employers to temporarily hire nonimmigrants to perform nonagricultural labor or services in the United States. Whereas, the H-2B visa is for non-agricultural workers. Period of stay: H-2A visa holders can initially stay in the U.S for no more than 1 year.