How long can one maintain O1 status?
There is no maximum period for O1 status. Theoretically, it can be indefinite. However, the length of the status is determined by the length of time needed for the alien to perform his/her duties or activities with the US employer. An initial stay is limited to no more than three years, provided the petition can establish that the O1 alien will need this much time for the proposed employment. This period may be extended at one-year increments thereafter, upon evidence showing that the alien’s continued presence would be required.
