I can confirm. In the consulting world I've had several instances of either being doubled up on projects or having to hit extremely demanding deadlines for mil

I can confirm. In the consulting world I've had several instances of either being doubled up on projects or having to hit extremely demanding deadlines for milestone payouts that required legitimate 60+ hour weeks. One week is doable, 2 is a stretch, beyond that people (myself included) generally had to turn to things like modafinil to keep going and there's a noticeable toll on general health and wellness. On the flip side, people who say they work stupid hours are usually just at the office stupid hours, not necessarily working all the time. But so are people who say they work 40 hour weeks. From working with hundreds of "normal" employees at clients over the years, I'd say the average actual productive time per person is around 25 hours.