We 100% trust our nanny (who's been with us for around 2.5 years) and have cameras. Not a ton and we hardly check them but we definitely had candidates turn us down when we disclosed them over phone interviews. And that's absolutely fine, I won't hold it against anyone who is strongly against them, but I don't think they're necessarily a sign of mistrust or an indication that the parent is going to be overbearing. I hear that from nannies online a lot, that if we hire them we should be able to trust them completely, but...people make mistakes. My sister-in-law briefly had a terrible nanny who yelled at her infant and smacked her on the head. That nanny had wonderful references and interviewed great, it's not like my SIL wasn't being careful when she hired her. Sometimes things just slip through the cracks, and some parents just need that extra assurance because...it's our children.

When our nanny first started with us, my son was an infant with no way of advocating for himself or communicating if something wrong. And we were going to leave him alone with someone we'd only met a few times for 8 hours a day, so no matter how many references we called it just made my husband and I feel better to be able to check. For the first couple weeks I briefly (like, for a minute) would check in every few hours or so. It was nice to see everyone was okay, and also it was just nice to see my baby, who I missed during the day. After the first couple weeks, we pretty much stopped watching at all lol, though a few times my son's gotten injured and she's directed us to the time/location and told us to check the footage if we wanted (we didn't, because at that point we knew her and just took her word for it). When my daughter was born and I went back to work again a couple months ago, I started checking in again briefly but only her bedroom cam and only to be able to see her because I missed her. That also lasted a couple of weeks.

We have cameras in the children's rooms, the playroom, and the kitchen, which is where our nanny spends most of their time (we also have exterior cameras that cover the outside doors/yard but they preexisted her and aren't related). Even when we checked them, we would never judge or even mention anything we happened to glance on them barring abuse or major misconduct. She knows exactly where they are, and there's a lot of other rooms where she can go for complete privacy. She also knows how the cameras work (that they don't store footage long-term, that only the ones in the bedrooms do audio, etc.). We have a really healthy working relationship and she's to come to us with comments/concerns regarding the job before a couple times and we've always managed to work them out, so I like to think if it was an issue with her she would come to us about it. And again, we adore her and trust her and the existence of the cameras doesn't negate that.

So I see why many nannies don't want to work with them. And definitely there are parents who use them to micromanage, which is a fault on their end. I think it just depends on both the employee/employer side on whether they can make for a healthy work environment or not.