do we need a notarized employment letter

[rsetty]

i have a cp appointment at chennai. wanted to get a second
opinion on the above.

[JoeF]

Yes, you absolutely, positively need the notarized employment letter. Without it, and without notarization, you will not get the IV.
See the DSL-1083 information sheet on the NVC website (travel.state.gov/nvc.html) (emphasis by me):
<<<
... you <!--EZCODE BOLD START--> must<!--EZCODE BOLD END--> obtain from your employer a written statement that the employment offered you is still available. The statement should be on the stationary of the employer's business organization and <!--EZCODE BOLD START--> must<!--EZCODE BOLD END--> be notarized. The statement <!--EZCODE BOLD START--> must<!--EZCODE BOLD END--> be presented at the time of your immigrant visa interview.
>>>

[rsetty]

thanks for the help

JoeF. thanks for the info