Form required of new employees to verify identity and employment eligibility can be filled out online and saved or printed. Employment Offer Letter Instructions.A sample letter offering a job contingent upon the results of a background check or other criteria. No. You either accept it, or you don't. If it isnt' acceptable, you need to have a conversation with them about what can be changed. This may involve negotiating the terms of the offer, signing an official offer, and sending a formal acceptance letter via email. Massachusetts does not require employment offers to be in writing, but many employers do make written employment offers. Instructions for completing the form are as follows: 1. Employment Classification: Insert an X in the appropriate box to indicate the position's. Then, they'll follow up with a formal written offer.