You asked if there is any precedent for recovering a marriage while the two affair party still works together.
I am about to get absolutely publicly pilloried for my take on this, but the answer is "of course, yes".
I have no doubt that there are instances where two people who had an affair as coworkers went on to recover their marriages and also keep their jobs and interactions on a professional level after exposure.
The question of "no contact forever" wasn鈥檛 around 50 years ago. What used to happen is the female would get fired, the end, if they were caught at work. I suppose this is version of no contact.
As time changed, I think the idea of no contact seems to have evolved, maybe around the 1990鈥檚 when it was more well known and prescribed as one component to recovery and reconciliation. I don鈥檛 have any studies to offer you, but my personal experience of living with a cheater since 1975. So each time, when I needed help on this, the counseling changed. Back around the late 1990鈥檚 and early 2000鈥檚, there emerged a "meet one another鈥檚 needs" philosophy on this, blaming infidelity on a failure to meet the needs of your spouse, so they cheated. It delineated all sorts of needs, and was popularized by a book called His Needs, Her Needs.
There are still websites that recommend this "needs" approach, but they seem to be dwindling from the levels of 2005 when I was looking for help then.
The larger question is "what are the odds that my spouse has the moral fortitude to finally stand up and forever do the right thing, even when tempted, even when upset, even when opportunity knocks?" In my case, I found that fortitude after a really bad decision in 1976 and a ONS. In my husband鈥檚 case, he did not, because he has had seven affair partners over the course of our marriage.
And because he did not, the coworker from long ago contacted him, they started talking "as friends", and they began an affair again.
Which do you think is more common?