None of this makes sense. 1. Long shifts are normal for fab operators in the U.S., eg Intel. 2. Certain engineers are always on call if an emergency happens, also true at Intel. 3. Samsung, not exactly the “live slow and enjoy life” type of culture as an employer operates fabs just fine in the U.S.
A friend of mine works at a fab at another company and he's not working crazy hours. I think he currently works the three days on three days off shift.
It's one thing to have on-call hours, it's another to have on-call hours while also being expected to work 60 hours a week. It sounds like TSMC is expecting the latter.
It might also just simply be a problem with management.
There's other industrial manufacturing that happens 24/7 in the US, so it's possible