Part of my written parent-carer contract is about me as an occasional teacher.
As well as providing daycare to children, I also work as a teacher in a school for children who have additional needs.
This means that I require 2-3 days per month (sometimes less) so that I am able to fulfil my duties as an occasional teacher.
It is for this reason that I advertise the daycare at such a competitive rate ($25 a day) is because I am aware that it might be difficult for some parents to find additional care on those days.
I like to be upfront about this so that no one is ever caught short by it.