Can I work If I did not receive a notice but approved

I checked my online status yesterday and my H1b got approved and they send a notice on Sep 28th. But Next Monday will be the Oct 1st. so I am wondering, in this situation, could I still work? Or I can not work until I got the notice?

Thank you.

You can start your work on oct 1st. No need to wait for your approval notice.

Thanks

Vivek