My job is, and I am lucky that I have a lovely employer. I'm an accountant (senior level) and have been with the same employer since leaving school and went from full to part time after having dc. So far my hours have been;
Full time
Part time - 2 full days a week
Part time - 3 afternoons a week
Part time - One day in the office one from home
Part time - split over 3 days working 9.30-2.30(ish) to allow for school drop off/pick up
I'm currently working the last version but change to 2 full days in the holidays as I have just been let down with childcare, for the millionth time 
In all part time cases I was working 15 hours a week and my boss had no issue with any of the combinations, although I didn't like the one day at home/one day in office combination.
All the changes were due to childcare issues but I am very lucky that it doesn't matter when my hours are done as long as they are done.
I work 15 hours a week and I earn just under £9,000 a year (and looking forward to the personal allowance increase in April!!)
I am hoping to be able to increase my hours to 25 a week once youngest dc starts school this september.
Actually I do have a 2nd job which is a pre-school administrator. I do this from home and it's 8 hours a week term time only (well it's supposed to be) and for this I earn £7.80 an hour. This fits in well as I can do it when I like, in the evenings etc
I'm not sure that helps much