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. Follow-up with a confirmation email.Make sure to include the position, start date, rate of pay and any recently negotiated items in your confirmation letters. There is very little legal binding in a job offer. Got offered one job, accepted, realized it wasn't full-time, took a different job offer starting the following week. Unemployment thinks they overpaid me. When sending an email letter, put your name in the subject line (Your Name Job Offer Acceptance). Customer: I am in Washington state. I signed an employment contract to give 4 weeks notice. Log into the application portal and click "Accept Your Offer", either at the top of the portal page or under forms.