Workplace Bullying?

[insanityscratching]

Dd works for M&S she has a 15.5 hour permanent contract and works extra hours each week (between 10 and 20 plus) The department is continuously short staffed not least because they don't employ enough staff but also because the majority are part time contracts and they have to fish around the staff to cover the hours outside their contracts.
Dd is increasingly unhappy not least because every request for a day off on holiday has been refused not at the time of request (sometimes three months previously ) but the week before the day off is due and this has caused difficulties with holiday arrangements where she missed one entirely and the second ended up being a mid week break rather than a week's holiday.
Often dd is the most experienced staff member and so is covering shifts with three untrained and inexperienced staff members when there should be seven staff on. One of these new recruits has taken a dislike to dd and shouted at her to Fuck off across the shop floor (there was no reprimand given) he has since called another staff member a bitch and last week when dd was leading three inexperienced staff drove yet another staff member to tears. He then went to dd's boss and said dd had made the staff member cry. Dd is being investigated even though the staff member told her boss that it was the person who reported dd and not dd who had made her cry (he isn't being investigated )
This morning when she is working eight hours out of contract she went to the notice board and double underlined is we are short staffed Wednesday because (dd's name) won't work and again we are short staffed Saturday because dd won't work. Dd is doing fifteen extra hours as it is and has long held arrangements for Wednesday and won't do the extra on Saturday because of the male staff member who is abusive and aggressive to her.
Dd will not have been the only person asked who has refused and many aren't doing any extra hours at all so it seems very unfair for her to have been singled out.
Other than finding a new job which she is trying to do what should she be doing?

She needs to write all of this down.

Take a photo of the notice board.

She needs, once she has taken a copy of the offending notice, to raise a formal grievance.

Well, well a bit of a turn up for the books, dd went to see her supervisor's line manager to ask for a form to raise a formal grievance as per the staff handbook. The line manager asked if she'd be happy to talk it through first with her and so dd filled her in on what has been happening and showed her the photo of the noticeboard.
The line manager was very nice and asked her to leave it with her for the time being to see if she could sort it but to come back if dd was still unhappy.
Lo and behold the supervisor came just an hour later to apologise unreservedly for the notice which has been taken down (dd still has her photo) to let her know that she had been made aware of the problems with the male staff member and dd wasn't being investigated over the incident he had reported but the line manager would be dealing with that herself and that dd's holidays have been authorised for next week when she had previously been told that it was now doubtful she could have the days off.
Dd still intends to leave at the earliest opportunity and in fact has three interviews lined up (one for her dream job (archiving historical records)) so hopefully the place will be more bearable for the time being at least and she will be leaving soon.

I'm really pleased for your DD, insanity. All the best of luck to her, and well done for standing up for herself.