If you are an F-1 student with an H-1B petition that remains pending with the United States Citizenship and Immigration Services (USCIS), and your “cap-gap” employment authorization is only valid through September 30, 2018, you may risk accruing unlawful presence if you continue to work on or after October 1, 2018.
What is a “cap-gap”
You are in “cap-gap” status if you are an F-1 student who is the beneficiary of a timely filed H-1B cap subject petition with USCIS, and you are seeking a change of status from F-1 student to H-1B on October 1st, October 1st being the requested start date of H-1B employment.
A “cap-gap” is used to fill the gap between the end of a student’s F-1 status and the beginning of potential H-1B status. To avoid any gap in status, USCIS extends the validity period of both the student’s F-1 status and current employment authorization, but only until September 30.
The “cap-gap” period begins when an F-1 student’s status and employment authorization expires.
Temporary Suspension of Premium Processing
USCIS has temporarily suspended premium processing services for cap-subject petitions to prioritize the adjudication of cap-gap petitions filed by students, however USCIS does not guarantee that it will adjudicate these petitions in a timely manner by October 1st. Students with a cap-gap H-1B petition that remains pending on or after October 1st are no longer authorized to continue working under the cap-gap regulations.