I've also worked with many single mothers who were looking for a "safe" coworker to screw around with and it usually created a very hostile workplace between the women. Any such male coworker was also a prime candidate for false claims of sexual harassment.
I've seen company divisions transform into an "office of unwed mothers" and chase men and productive women away as it's tough enough for an office to carry one or two employees who arrive late, leave early, call out because of the kids, bring the kids in to the office, and never travel. In addition every little look, comment, or incident got blown way out of proportion and NO ONE in the company will ever call them out for their unprofessional behavior. I've watched a such few divisions even go completely under as productivity dropped to the point that corporate found it easier to realign the work internally, move the work to another location, or outsource the work completely.