i140 180 days rule

[KSQL]

Hello All,

 

Can you please clarify whether i140 cannot be revoked by employer after 180 days  from approval date. 

so is  it  180 working days ? or just 180 days which includes Saturday and Sunday ?

[KSQL]

hello All 

 

Is 180 working days or just 180 days ??

[vinodhts]

Use to 180 days not 180 working days

[pontevecchio]

You do know the employer can revoke it though H1 extensions are still allowed based on the 180 day rule.

[sum_it_jec]

I  have i-140 approved in 2011 and i got couple of extension based on approved i-140  and  now i am changing my employer A who filled this i-140. 
I just did H1 transfer with new employer B and got 1 year extension..
my prev employer A is going to withdraw my approved i-140.

1. Can i extend my H1-B based with new employer B in future on I-140 which is going to withdraw by prev employer A ? 
2. lets say my priority date become current in couple of years . and i join prev employer A again. Can i file i-485 based on prev approved i-140 which i got from this employer A earlier ? 

3. Is it really required to join prev employer to file i-485 if priority date is current. if new employer didnt file new labour yet ? or is there any other way ?

please let me know .

Thanks,
sum