It's perfectly okay to reply with, "Thank you for the offer. I really appreciate it.Complete Post-Arrival Check In e-form. 3. Please use a black pen to complete form. This document is typically a positive response to a job offer. Forms. Forms in English. You will receive a follow up letter requesting the missing data. Offer Letter (Recommended) – After a job offer has been made and accepted, an offer letter may be completed and given to the new hire. Include a space where the potential employee can sign and date the letter to signify their acceptance.