I've never heard of hours like that outside of early high-growth startups. Have worked at FAANG and know many people who've worked at many of the FAANG companies.
I’ve worked 80 hours in a week at Microsoft; before a paper deadline. After though, I was able to work less and regain balance. It’s certainly not unheard of before any kind of deadline at many companies.
I think we should normalise talking about average (median) working hours, not the extremes. I probably worked 100+ hours on paper deadlines, but working 60 hours in startups is about my sustainable limit, and when coding it’s more like 45.
People lie about their average working hours so much. If you listen carefully, it usually becomes apparent that their claims are physically impossible, eg they mention that they went to the gym each evening when the hours imply they should have been working. Generally, anyone who states above 55 hours should be treated sceptically.
