India, Aug. 23 -- For Indian professionals working in the US, an employment-based green card application involves several stages, including choosing the right employment-based category, obtaining an immigrant petition where required and waiting for an immigrant visa number to become available. USCIS lists EB-1, EB-2 and EB-3 as the main employment-based preference categories for adjustment of status in the US.

Here are the key questions Indian green card applicants should know before starting an employment-based application.

EB-1 covers priority workers, including people with extraordinary ability, outstanding professors and researchers, and certain multinational managers and executives.

EB-2 covers professionals with advanced degrees ...