TL;DR in three lines: >> “The work culture in Taiwan is really different than in the U.S.,” said a person identified as a TSMC Arizona fab equipment engineer on Glassdoor >> “The reality for people from Taiwan is that they are doing even more than 12-hour days often". >> “TSMC will have to change to an eight-hour work day five days a week.” ... well yes!
One would think that TSMC might have known about this small issue, before deciding to build a plant in the USA.