Multiple Jobs in H1B

[jjon]

I am currently on a night shift job and looking to new roles so that I can work during day times. Since my new day job company starts a h1b transfer, I want to work a month to understand if the new job is good. 

Is it possible for me to work on both the jobs for a month and then stick to one of them from then on. 

This will help me to leave the day job if the work culture is not good.

[gopalakrishnach]

As per my knowledge, on H1B you can only work for one company on full time basis.