I currently work for a large firm that has an office in London and an office out in Essex, and have done for 5 years.
I went on maternity leave 3 years ago, had twins, and when I came back I wanted to cut my hours to two days a week. I couldn't go back to my old job, but was offered a job in a different department. I say 'department' - it was actually just me and one other girl, who worked in the London office, and I was to work as her remote assistant. I accepted this on the basis that I could work 9-5 from the Essex office. I did OK at this job, not sparklingly well, but not badly.
Anyhoo, just over a year ago this other girl left and her workload was transferred over to another section, and I was transferred with it. It was agreed that I could continue working from the Essex office. Anyway, since I've been working on the new section, my performance has gone downhill. I've not been given a warning, or had performance management, but my last appraisal was not great and neither was my interim performance review last month (although there was some improvement).
I've got a feeling they're going to ask me to move to the London office in an effort to improve my performance. I would be unable to do this because of my childcare - my mum looks after the kids while I go to work and while London is commutable from where we live, it would add an extra 3 hours onto my day and my mum can't manage that.
My manager and the HR department are aware of the constraints on my childcare, and they know that I have to work from the Essex office and do 9-5 to fit in with this. Are they allowed to move my job despite knowing this?