I do work in a field that it's easy to go part time in, I'm an administrative assistant.
I also work in a very busy office, and we've needed some help for awhile. So my boss will hire someone full time to take my place, and I will stay on part time.
I'm also flexible. My new role will be whatever role the organization/my boss needs. It doesn't matter to me if I get stuck with my least favorite things to do, because I'm being allowed to go part time.