If she enters into US before Oct 1st on H4 status, she would become H1 status (if her H1 is approved) automatically. If she enters into US on or after Oct1st using her H4 status, she needs to file COS again in order for her to work on H1 status.
Hi I have a same question. I am travelling on 23rd April and coming back on 12th July.
So can I start working on 1st october without getting the H1b stamped.
Also, I’ve heard that the CoS gets rejected as soon as we leave the USA, H1 will get approved but one cannot start working without re-entering USA with a stamped H1b Visa?