The period of time when an F-1 student’s status and work authorization expire through the start date of their approved H-1B employment period is known as the "Cap-Gap".
Cap-Gap occurs because an employer may not file, and USCIS may not accept, 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...
