WordPress permalinks

I don’t have the “home” page, instead I have the “work” page set up as a main one, but when I’m adding new pages and selecting “work” as a parent page for those, it gives me this kind of permalink:
http://www.sitename.com/home/item-1

Instead, I’d like to have this:
http://www.sitename.com/work/item-1

What do I need to modify to fix it?