Lost Job on F1 OPT and H1 application picked this year

[dmpliv]

I am currently on F1 OPT. I was working for Company A and I lost of job few weeks back. My H1-B application was picked in this years lottery, so it would become effective Oct 1st 2017. Company A has told they will not withdraw my application immediately and I have time until end of Sept to find another employer who would do the transfer. My question is can I start working on F1 OPT with Company B and end of Sept and the can apply for H1-B transfer later. Would this cause any issue or should I wait until end of Sept so Company B can apply for transfer?

[appar]

You cannot transfer your H1 visa before October 1st. Also, by law your employer has to revoke your petition as soon as you leave the company. To get a transfer you will need to have 3 payslips from your petitioning company starting October 1st which you won't have. I'm afraid you will have to try again in next year's lottery.