I have an employment agreement that outlines that I work from home on one specific day of the week and from the office remainder of the time. I've just had a new agreement sent to me (which I was told was just to changes in IP clauses etc) however within, it now states I'm office based all the time. Hopefully this is just an error which they will correct however if it's not, what are my rights? Can they just change my contract and remove the work from home day? Thanks