Quote: rover49 "He phoned her to tell her of the formal warning, nothing in writing yet. Hopefully Unison will provide the representation, if not I will PM you, thanks for the offer. Your assumption on employer is correct.'"
I would ask her to get the request in writing for sure, in fact any half decent company would.
It might be a formal interview, not a formal warning but make sure you are fully aware of what it is.
Would think she had hit a trigger point of either a 10 day or 4 week absense, but it may just be to see what the emplyers can do to help, over 4 weeks they usually refer to occ health