Waiting for Permanent Residence Card while starting new job, I-9 and EAD

[joshall]

My I-485 is approved on 8/23 and I received a Welcome Notice. Very good news, but I am supposed to start my new job on 9/1.
What should I present during filling my I-9 form? Can I still use my EAD as an evidence of authorized employment?
USCIS is still showing the 'Decision' stage, with no 'Post Decision' activity yet. Is there any chance for me to get the physical Permanent Residence Card by 9/4?
I have a risk of losing the job if I delay the employment.

Also, on a slightly different matter, does employer perform employee verification using E-Verify? What do they do to the completed I-9 form, apart from checking and verifying the information and card evidence, and retaining for the record for 3 years?

Thank you for your responses.

 

[cafeconleche]

How did you get permanent residence? Do you have an unrestricted SS card?

 

[joshall]

I-140 and I-485, EB2 NIW, 5 months.
No, I dont have an unrestricted SS Card.

 

[nkm-oct23]

Use your EAD to prove employment eligibility until you receive you PR card. When you receive your PR card inform HR so they can update their records.

E-verify depends on the employer, not every employer is required to use E-verify (yet).