J-1's are issued for a maximum of 5 years per individual. Beyond that, universities can only hire postdocs etc under H-1B, because academic hires are exempt fro

J-1's are issued for a maximum of 5 years per individual. Beyond that, universities can only hire postdocs etc under H-1B, because academic hires are exempt from the quotas. It's unlikely a postdoc-level position would qualify for an O-1.