That's fine, but then "hours worked" at best measures how much time was physically spent "at work", and will be entirely disconnected from how much time guys like McCarthy, Turing, Einstein, and Feynman thought about their research. They weren't doing it for the overtime pay.
I picture a lot of them living at their office, like Richard Stallman was in the Free as in Freedom [1]. If their managers had to worry about going to prison, they'd probably be prohibited from working at their offices.
