I work in retail and for the last year one of my days off has been Monday. Our contract doesn't state what days off we get, just the hours we work.
Having a Monday off works well for me as I have a long term health condition and when I have an appointment it falls on a Monday so I don't have to ask for time off.
Another member of staff who has been in the department for 6 months has now said she want s Mondays off too. so my manager has now reshuffled the rota to give her Mondays off instead and is giving me Fridays off instead.
AIBU to be really annoyed about this?