The dreaded decline of the offer usually comes before accepting the offer, oh no, not on this one. Relocation assistance approved and sign on bonus all in place, even 3 weeks paid in a hotel to help transition.  As a recruiter you have already visualized the check coming in the mail and your off on to your next biggest and most important search.  

Although, instead of being happy and feeling good about all the hard work you did that goes into recruiting the hard-to-fill unicorn all that work goes down the drain. Ok, so its not your first turn down and definitely not your last but it still hurts. I'm not sure how to recommend getting over it, as it usually takes me a few days to dust myself off and get back on the horse. I can say that if you don't keep your client moving on reimbursing your candidate for travel timely and let the process last to long you they are jeopardizing your deal and closing it out and making your placement. 

This is the moral of the story. Make sure not to get complacent even after your candidate accepts an offer and never before but sometimes keeping the process moving is out of your hands as a recruiter. Just do as much as you can to keep everyone informed and keep checking with your clients to make sure everything is moving along and processing checks for mileage and hotel reimbursements. The first item on the candidates list was "I never received the reimbursement for traveling for the onsite interview and if they can't follow up on that I'm concerned they would do the same if I was working for them. 

Keep your eye on every little detail, and don't lose out on a big fee like me.