Hi guys

Just wondering if anyone knows....

I am currently working full time and am having 6 months off atleast when bubs is born.
When I am ready to return to work I would like to go back as part time (3 days a week).
Does anyone know if I am able to do this? As in, does the employer only have to offer me my previous position at full time or do they have to go with what I decide (ie only coming back 3 days rather than full time)

Hope that made sense to everyone, mt preggers brain is not working that well at moment!