anu.sonti said:Anybody can tell me when can i change my employer? I filed I-140 in sep.
You can safely change employer ONLY if your I-140 has been approved AND your I-485 has been filed more than 180 days ago.
If your I-485 has not been filed and you have an approved I-140 and you want to change employer, then you need to have the approved I-140 with you, make sure your curent employer does not revoke your I-140 or does not use the approved LC for someone else. Even in that case, you have to start from scratch(LC filing) with your new employer, but you keep your old priority date. Not too much to gain and may be a lot to lose if you change before your I-485 application is 180 days old.
hope this helps