Below are the two formats i used. Hope this helps
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[DATE]
[Name of Person In your RFE ]
Director
U.S. Department of Justice
Immigration and Naturalization Service
[ Address ]
Re : [Your Name]
Original Employer : [Sponsored Company]
New Employer : [Current Company ]
NSC/VSC/CSC/TSC Receipt Number : [ No.]
Receipt Date : [Date]
Pending Application to Adjust Status / Change of Employer
Dear Mr. [Name to Address ]:
My Application to Adjust Status has been pending with the INS [VSC/NSC/CSC/TSC]
Service Center for at least 180 days. This letter is to notify you that I
no longer intend to enter into employment with the original sponsor of the
I-140 petition approved upon my behalf.
Rather, I intend to work for the new employer named above in a similar
occupational classification as the original labor certification job
opportunity. Enclosed is a letter from the new employer which verifies that
the job offer exists, and includes the new job title, job description and
salary.
Your approval of my Application to Adjust Status based upon the change of
employer is greatly appreciated.
Sincerely,
[Your Name]
==============================================
[[[[[ THE FOLLOWING TEXT IS TO BE RETYPED
ON NEW EMPLOYER'S LETTER HEAD ]]]]]
[Date]
[Name in RFE]
Director
Bureau of Citizenship and Immigration Service
[Address]
Re : Pending Application to Adjust Status / Job Offer
Alien : [Your Name]
Dear [Name in RFE]:
This letter is to verify our offer to the above-named alien to work in the
position of a [Job Title]. The proposed rate of pay is at
least [ $ 00000.00 salary ] per year. Mr.[Last Name ] joined our corporation on [Date] on
employment authorization card as a [Job Title].
Mr. [Last Name] proposed job duties and requirements include, "[JOb Duties , Include from Labor Certificate]..
We understand that the alien's ability to work on a full time, permanent
basis in the job offered is contingent upon the alien becoming a lawful U.S.
permanent resident.
The terms and conditions of the permanent employment petition continue to
exist.
Regardless of what is stated above, both parties reserve the right to
terminate employment at any time at will and without cause or advance
notice.
Sincerely,
[Name of Agent of employer]
[Title of Agent of employer]