I-140 forgot to mention a last employer , I140 approved ( effect on I485 application ?)

[ArunJAD]

Hi ,

Graduated - Dec 2007

OPT - Jan 2008 to Sept 2008 ( worked with employer A - Unpaid job )

OPT - July 2008 to August 2008 ( worked with employer B )

H1B - Oct 2008 - Current ( working with employer C)

I applied for Labor Certificate and I-140 with employer C and both applications are approved. The issue is that I worked with employer B for couple of months and forgot to mention this employment details in Labor filing and I-140 application.

How does this affect my I-485 application and now that the Labor and I-140 is approved , how do I include this in those applications.