I am trying to help my sister, she is on her own with two children. At the moment she only works 16hours per week and receives tax credits of about £140 per week, her annual wages from her work are only about £2000. She wants to do more work but is worried about how it will affect her credits cos she will be spending more on petrol etc., She says she has to go from 16hours to 30 hours to get more money....is that right?? I don't understand all this and she is depressed and not in a fit state to help herself at the moment, she is so worried about ending up worse off financially, although she actually would like to work more as she would be mixing with people more that way. Can anyone advice on what she could do without losing money?? Thank you.