No stop sign, so let me just give my 2 cents worth on separation.
Your BW is going to look at your actions during separation as if you were in the house. By that I mean that if you are still seeing OW, go out partying, start up with another woman, and in any way act like a single man, it will drive another dagger into her and let her know that you're not serious about working on yourself.
You need to conduct yourself as a completely married man. That means if you have children, being there for their lives and being a parent. As close to full-time as possible. You need to give your BW utter transparency in your life and not hide one thing from her. A lot will depend upon if your BW needs to go NC from you or not, but every action that you take, even if she chooses to ask you to never contact her unless its for finances or children, needs to be taken with the goal of proving to her, through your actions, not words, that you are committed to being the partner that she needs. Go to IC, do the work, do as much for the family as you can, and leave the door open in case she wants to step back through.
And you really, really need to consider that either the OW or you will have to leave your place of employment. Your continued working with her, especially after re-starting your A, will cause your BW nothing but anguish. In a completely just world, the BH of your MOW should be told too. You will also need to get STD/HIV tested and take the results of that test to your BW to prove what the results are. Don't just tell her take the actual results to her so she can see for herself. Yet another reason for the BH of your MOW to be told so that he can make sure that his health hasn't been compromised.
I sincerely hope that you can do what you need to do to get to the why of your A. And that you can help your BW heal as much as possible. Best of luck.