Current regulations allow certain students with pending or approved H-1B petitions to remain in F-1 status during the period of time when an F-1 student’s status and work authorization would otherwise expire through the start date of their approved H-1B employment period. This is referred to as filling the “cap-gap,” meaning the regulations provide a way of filling the “gap” between the end of F-1 status and the beginning of H-1B status that might otherwise occur if F-1 status is not extended for qualifying students. 

An US employer may not file an H-1B petition submitted more than six months in advance of the date of actual need for the beneficiary’s services or training. As a result, the earliest date that an employer can file an H-1B cap-subject petition is April 1, for the following fiscal year, starting October 1. If USCIS approves the H-1B petition and the accompanying change of status request, the earliest date that the student may start the approved H-1B employment is October 1.