EAD I-9 and H1B

[natan111]

If one is working on H1B for employer A, with I-485 pending and a valid I-485 EAD, can they work part-time (on the side) with the EAD (legally)? Assuming that the H1B is voided as a consequence of the EAD based part-time job, can one continue working for the employer A (legally), given that the EAD is valid, even without updating the I-9? Thanks!   

[pontevecchio]

You have to update the I9.

[natan111]

8 hours ago, pontevecchio said:

You have to update the I9.

But is the work for employer A still authorized (legal)? I thought I-9 was a liability of the employer (they face charges if they knowingly hire unauthorized workers). Where does it say that updating I-9 is mandatory for the employee (and what's the consequence of failing to do so, given that they are authorized to work)? And if it is, how does it impact the lawful status (AoS in this case)? Thanks!