I think this mis-characterises where the burn-out often comes from. If you have an outwardly light task with onerous implications (just feeling you are being d

I think this mis-characterises where the burn-out often comes from. If you have an outwardly light task with onerous implications (just feeling you are being dishonest, as in these examples, can easily be enough) or very stressful segments, you aren't just dealing with the stress during the hours you are officially clocked-on, you will be thinking about it throughout chunks of the rest of your day. It may even inhibit sleep to an extent. Time away from a stressful situation is often not stress free time. Unless of course you are one of those lucky people who can reliably switch these thoughts on and off at appropriate times, mentally shift responsibility ("not my job to keep that correct, guv'ner") without guilt, or lack the awareness for these issues to even present themselves at all. See "how do politicians and lobbyists sleep at night"!