Is Stamping Required if we change Employers

[Centruloid]

Hi

Currently I am on H1 B Visa . While in US, I changed employers earlier last year, So I have new I797 and I also have Visa Stamping for the old Employer which is valid till next year. I am planning to go to India for vacation .

Do I need to go for stamping while returning considering: I have changed my employers??

Reply will be gratefully appreciated

Thanks