Originally Posted by
bunyip
IIUC the OP isn't talking about charging for holiday closures. I think it's the rather contentious issue of notice periods spanning the school holidays: i.e. school holidays don't count towards a notice period. So, for example, if a client gives four weeks notice a week before the start school summer holidays, the notice period is supposed to include the last week of term, plus the first three weeks of the following term, starting September.
Yes, I know, it's weird and I can't think of any other business where traders try anything similar on. I think it's bad practice and on dodgy ground from a legal point of view. I know a couple of CMs who've had it backfire on them: rather badly in one case. :(