Can we work with Invalid 1-797 & Valid i-94? Note I-140 approved

Hello,

My Current expiration for 1-797 is 11.15.2015, I-94 is 11.25.2015. My I-140 was approved but couldn’t received copy from USCIS to file H1b extension.
Here is my Question: Can I work even after 1-797 expiration as I haven’t able to apply H1 extension? until I-94 expiration. Is there any thing do I need to taken care?

Regards,

NO, you should not. At times, I-94 is given for 10 extra days w/ assumption that this will give time to the employee to pack his/her belongings etc. It is not a grace period to work.

Stop working once 797 expires and have the extension filed ASAP.