The Brookings Institution. July 20, 2012.
The H-1B visa program allows employers to hire foreigners to work in specialty occupations on a temporary basis. Visas are granted in three-year increments with the option to extend up to six years. With sponsorship from their employers, H-1B visa holders may apply for permanent residence, and their H-1B visas can be renewed for one year extensions until their green card is issued. There is a cap on the number of H-1B visas that can be issued each fiscal year. Academic and research institutions are not subject to this cap. [Note: contains copyrighted material].
http://www.brookings.edu/~/media/research/files/reports/2012/7/18%20h1b%20visas%20labor%20immigration/18%20h1b%20visas%20labor%20immigration [PDF format, 38 pages].


