Employment Offer Letter Instructions. You'll need to formally accept your offer." When I select yes, I am asked to fill out more info about my employer. Do they want my current employer or the one I turned down the job for? It is a pleasure to inform you that the Department of ____ has recommended your appointment at the rank of ____, effective ____. Is it okay to ask for a copy of the job offer letter before accepting? Inquiries as to how the applicant could demonstrate or describe the performance of these specific job functions with or without reasonable accommodation. If you send a letter accepting the offer, you indicate your willingness to work, but it is not really binding in the sense you seem to be thinking of. Customarily, in the US, it is three days. However, it is not a legal standard.