I was offered a job with Company A, and verbally accepted. We're in the process of sending off the official offer letter and a background check, but things seem to be moving along quickly/confidently.
I've withdrawn from any searches that haven't started yet (first round interviews, haven't submitted new applications) but I'm waiting until everything's signed off before withdrawing from the 4 other active searches I'm in. With the holidays around the corner, most searches have been closing in the next few days. However, one company has asked to reach out to my references before moving onto the next step. (This hasn't happened before - most companies have just called up references unannounced!) I know that's not a definite "we're going to hire you!" but I hate to have them spend their last full work week before Christmas going through the process to make me an offer when I've accepted elsewhere. However, everyone has told me not to withdraw until I have the offer in hand, so I'm hesitant to do so now.
tldr: Is it appropriate to withdraw prematurely?