Freelancers often work part-time because they are more expensive, so they are not hired full-time, but they generally have many clients in the same week when th

Freelancers often work part-time because they are more expensive, so they are not hired full-time, but they generally have many clients in the same week when they can. Moreover, they most often have some expertise in their field, which means they still devote quite a bit of time keeping up to date--they don't just spend their time with the kids. What they can do, though, is taking several months off, either between contracts or when it is ok with their long-time clients. Anyway, that's a kind of special situation, essentially unrelated to the employee working 20h/wk to take care of their family.