There are several things going on here that I can see. Let me try to make sense of this. These are rhetorical questions, so there is no need for an answer to all of them, please.
1. What is your level of authority or your network of supporters?
a. Do you or your ‘buddies’ have the power to ultimately resolve this situation and any that might occur in the future?
i. If yes, then great. Lets move forward.
ii. If no, BUILD YOUR NETWORK and we’ll meet up again when you’ve got influential friends!
2. Did Dan specifically violate a company policy, procedure or process (forget about the discrimination to woman for a minute)?
a. Does he always do these types of things?
b. Was it posted internally, first? Is he really the one to post it? When were the applications given to him?
c. Who is in HIS network? Does he or his buddies have a vested interest in any of the candidates that were selected?
d. Was the policy, procedure or process CLEARLY defined? Has he done this before? Should he have known?
i. If the answers are generally NO, then I would have a real heart to heart and make everything documented and crystal clear for him. If the hiring decision has not been made, I would gracefully back up and start it all over again with the right players, and offering the promotion from within potential first as it builds the team loyalty because you are growing your people - if and only if they are REALLY the most qualified. I am fan of the understanding that someone's ability to perform the job is VERY DIFFERENT from their education and length of service. I can't stress that enough.
1. I would caution you to not focus on the woman aspect so much, and I can say that because I am a woman. We are talking about a high degree of knowledge, capability and decision making in a Trauma Unit. Regardless of where they come from or who they are, they would have to be the “right man for the job" for me. We are talking about saving lives – it doesn’t get more critical than that!
ii. If the answer is generally Yes, then I would take a corrective action on this guy for poor performance and non-compliance with company protocol. And redo everything if able.
3. Is the company policy clear and everyone trained?
a. Make it clear and train if it’s not. You know, mandate that the unit manager for that shift HAS to be involved (if not give the final answer).
4. Are their any other males on the night shift in the department or area of the building? Do you have security on the third shift?
a. As much as I might hate to admit this, sometimes you NEED a man on the night shift if there isn’t anyone else to “protect” when it’s needed: to end an altercation, to remove someone from the premises, to move that heavy piece of equipment or heavy patient, and on-and-on. Honestly, sometimes a man is MORE qualified for a particular position.
5. Does Dan have access to specific information about the other candidates that perhaps you do not have?
a. Such as they have poor attendance, low productivity, inability to provided highest quality of care, prone to gossip, etc, etc, etc.
6. What does Dan think of Carol?
a. Is she REALLY capable?
b. Does she have any performance issues or a drive to make her shift the best trauma unit?
c. What is her track record of success with selecting and retaining employees?
d. Was she available? How fast did the position have to be filled?
7. I think you get the idea, that there might be more to this than discrimination. But the last question to ask if all else fails is DID Dan discriminate against the most qualified individuals BECAUSE they were woman?
a. If the answer is no, then you need to help support and train Dan on the fact that reality is not reality, but rather the perception of reality is really reality.
i. In this case, it’s a simple example of what happens 95% of the time, you have a manager who is a boss not a leader. He would need to having leadership training and mentoring.
b. If the answer is yes, then he needs to be called to the mat with the facts that you have gathered from your investigation and the appropriate actions need to be taken.