I work part time and my contract is for 20 hours a week, things have changed in the workplace quite suddenly and I have been asked to up my hours to just over 31 hours. I love the hours I work as they fit around school and I get a little bit of time each day to do jobs at home. They want to add an extra 2hrs and 20 mins to my contract each day which also means I will need to source childcare for my kids after school every day and that I will never be able to take my children to school or pick up and for me this is very important and if I have to pay for childcare every day it just isn't financially viable. If I say no I can't do the extra hours and explain my reasons what can they do about it. Can they dismiss me and find someone else who can work the hours they need???