Of course "Outside IR35" doesn't really exist either, it's just "contracting", but companies find it useful to have labels to clarify their position. I agree I

Of course "Outside IR35" doesn't really exist either, it's just "contracting", but companies find it useful to have labels to clarify their position. I agree I wouldn't touch the kind of umbrella arrangements you're describing, but short-term or set-term employment contracts do exist too, although usually come about from circumstances different to advertising for contractors.