With my long term nanny, I would keep her pay the same, but would expect her to give the same courtesy to me if I needed an extra half hour here and there.

I'm assuming you mean that you have guaranteed her that you will pay her for X hours each week, that she has Y number of PTO days/hours for the year, that she has exhausted all of those PTO hours, and is now asking for additional time off. If that's the case, then no, you would not pay her.

I'm an MB. If my nanny needs time off she uses sick leave or vacation time - whichever is relevant. If she exceeded available leave, or wanted to take time beyond what was in her contract (i.e. an extended vacation) that would be leave without pay, that presumably we'd negotiate in advance.

If you're supposed to work from 8am to 6pm and you say that you have a doctor's apptmt and cant' show up until 10:30, then that comes out of your sick time. So you get paid, but you have that much less sick time to use in the future. If you have no sick time left, then you don't get paid for that time.

From what I know, most employers pay regular wages as long as the purpose was valid.

Most parents would not pay for that time, no.

On a rare occasion an MB might decide to pay because she wants to as a favor to her nanny, or as a thank you for something the nanny did (staying late without notice the week before, for example).

But no, generally unpaid time off remains...unpaid.

My question is regarding paying nannies for the time they take of work other than PTO. I get it that when a nanny is not working by family's choice while available she gets paid. I am on board with that. However, if a nanny tells you she has to be two hours late, i.e. not available to work then would you all pay her for those two hours? TIA