Can I work with 2 employers (Full Time) for a period of 1 week on H1B visa ?

[Gopakumar Nair]

I am currently employed with Employer A and my H1B is now transferred and approved with Employer B. To be more specific I need to join Employer B on 10.26.2020 and they are not ready to extend my joining date by a week. My employer A has requested me to extend for another one week which is till (10.30.2020) so that I can help them complete a major work which is pending. 

My questions is, as my H1B is already transferred and approved with Employer B now if I officially join Employer B on 10.26.2020 and continue working for Employer A for another 1 week which is till 10.30.2020 which means my last working day with Employer A will be on 10.30.2020 ? 

Will it cause me any problem now or in future while doing my Green Card processing as there is an overlap of employment with 2 companies for a week (i.e. for a week I will be employed with 2 companies full time) ?

[gopalakrishnach]

On H1B you are supposed to work for one employer for 40 hours. I do not know whether 1 week is good or not but GC processing anything from past might come and bite you. Better consult attorney..