Hi there, I started working for a new family 2 weeks ago and I've got a problem. I usually start work at 7.30 am but last Friday MB asked me to come at 9 am. I finished at my usual time but was asked to come for three hours, 12 to 3pm on Monday and will be paid for 1.5 hrs. extra work. I said yes to MB because she's got a job interview and I want to help her this time but Monday is my day off and I need to talk to her. She also asked me if I could come on Sunday next week and that's not possible at all. How can I tell MB in a polite way that I don't want to work on my days off? I'm their first nanny, they had an au-pair before.