AIBU to think that if my DPs ex keeps their son off school today then she should have arranged the child care - even though it is DPs day to have children. Ex doesn't work and keeps the kids off school at slightest sniffle then expects my DP to take day off work/arrange child care at the drop of a hat. I am divorced and have 50:50 custody of my DCs with my ex - we have an understanding that if you keep the child off school you are responsible for child care no matter who's "day" it is to have the children.