I do not believe that people are more productive after about 4-5 hours a day of work.
The fact that the productivity metric used here is emails sent kind of proves my point: I send emails when I'm worn out with real work.
I've seen real teams cut hours and get more productive, so if the workday is extending that should be a red flag to employers: productivity is going down, and they need to push back on it.
If somebody runs a team or an org here and wants to A/B test it, I'd love to see the results. My anecdata is historical and not properly tested.
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