They don't ask. If they did ask, I'd say that tech employers are designed intentionally to subsume as much of your life as they can. If you want to have your own life, you need to stake a claim.
More controversially, I'd say that any labor relationship is necessarily exploitative, and doing any work beyond the minimum means that you are giving more than you're getting and thus being abused. But that's not advice for having a prosperous career. :)
More controversially, I'd say that any labor relationship is necessarily exploitative, and doing any work beyond the minimum means that you are giving more than you're getting and thus being abused. But that's not advice for having a prosperous career. :)