My parents in their 80’s live with me. A caregiver comes in 3 times a week to shower them and a few light duties. My dad is constantly talking about how wonderful she is. He used to be concerned about spending money on a caregiver but since this new girl he is all about her and how worth the money she is. He recently acknowledged that she gives amazing showers which included entire front of my dad. My dad can shower himself on days that caregiver isn’t here. I’m beginning to think my dad is attracted to her and likes whatever feeling he seems to be getting from her. Should I be alarmed at his behavior or let it go. As his daughter, to me, it’s disgusting.
When I was caring for my FIL, I specifically DID NOT oversee his showers, b/c he did have some sexual proclivities of which I was only too aware. I didn't want "that" to be my takeaway from caring for him, nor as his DIL.
I made sure he showered and he was capable of showering himself. He didn't like bathing, ever, but when the female aids came, suddenly he was all for it.
We did have a couple of his female aids help him shower and they told us he was not always appropriate in his behavior. After that, only the male aids would help with showers.
If dad is capable, instruct the caregiver to make sure he cleans his own private areas. She probably doesn't much like doing it anyway.
You did not give any indication in your profile what level of care either of your parents need. Any ADL's that they can do themselves should not be done by a caregiver. (Unless they are not doing them well.)
If your dad has been diagnosed with dementia sometimes oversexualization can happen. It is not your dad it is the disease. The caregiver needs to enforce boundaries. If you find that your dad is getting "handsy" and the caregiver is not correcting the situation then I would have a serious talk with the caregiver. If it continues I would look for a replacement.
The last thing you need is a "sexual harassment" lawsuit to deal with.