H1 transfer to H4 question

[Peterl]

1. Can I have H1 and H4 at the same time? e.g. I am holding H1 now. But I want to apply for H4 in case I lose/quit my job.

2. If I can't keep H1 and H4 at the sametime, should I leave the job by the time I apply for H4 or by the time I get receipt for H4 application or the time I get H4 approved?

Please advise.
Thank you.

 

[jaxen]

1. No
2. H4 is generally effective only from the date of approval.