It actually originated from shift work. It used to be two 12-hour shifts, and th... | Hacker News

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		ry0ohki on Sept 1, 2013 \| parent \| context \| favorite \| on: We Let Our Employee Set Their Own Salaries It actually originated from shift work. It used to be two 12-hour shifts, and then Carnegie and others realized three 8-hour shifts were more productive.

zerr on Sept 2, 2013 [–]

Right.

http://en.wikipedia.org/wiki/Eight-hour_day

So after 100-110 years, maybe it's time to come up with even more efficient work day? (But keeping the right direction).

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