I do not know personally, nor have I ever heard of, any no-contact plan succeeding where the ex-lovers continued to be in contact at work. Sorry.
I'm not saying it can't be done, but I think it would be damned difficult, and your husband would have to be VERY highly motivated to make his reconcilation with you work, and very scared of losing you, in my opinion.
I also think the OW would have to be chastened, and respectful of the boundary that the married couple has laid out that they are wanting her to back off and let them work on their marriage. If she were the pursuer, I don't think it would work -- at all.
The problem is, physiologically (brain chemicals), "contact is contact." In fact, even a NEGATIVE contact (say, a pissy argument with the former OM/OW) can re-stimulate the brain's endorphines, and re-set the wayward spouse's withdrawal "clock" back to 0:00:00.
