Thanks so far.
I stopped flying for this airline a few months ago. It was a medium sized European charter. I've looked through the OM-A and cannot find anything in relation to a delayed reporting time. I also checked the same for the airline before that (HK region) and nothing within their too.
I've located the quote above in the EASA docs now so thanks for that. So bottom line is, it's completely legitimate. One offs I suppose are fine but at the previous airline this was a weekly and sometimes twice weekly occurrence. The legislation is so week in this regard it defies belief! For most it's not possible to get more sleep after waking up once - that's the reality of it anyway.