I also for a second don't believe it is productive time.
I'v worked similar hours, and believed I was productive, until I had a team and saw what happened to their productivity when they worked long hours.
Not just did it damage their productivity, but it killed overall team productivity, because it caused a rise in conflicts, rise in "downtime" where people were physically present and in theory working but didn't get anywhere.
This might "work" for some notions of work for simple repetitive tasks where you can have someone overseeing the work and "whipping" people to keep tempo up.
I have never seen it work with more than very moderate, very temporary, increases in working time, across a large number of teams over the last 20 years.
In fact, I'd argue that a 40 hour week is pushing it for developers. I have my most productive weeks when I work less, and I know many who are the same.
I'v worked similar hours, and believed I was productive, until I had a team and saw what happened to their productivity when they worked long hours.
Not just did it damage their productivity, but it killed overall team productivity, because it caused a rise in conflicts, rise in "downtime" where people were physically present and in theory working but didn't get anywhere.
This might "work" for some notions of work for simple repetitive tasks where you can have someone overseeing the work and "whipping" people to keep tempo up.
I have never seen it work with more than very moderate, very temporary, increases in working time, across a large number of teams over the last 20 years.
In fact, I'd argue that a 40 hour week is pushing it for developers. I have my most productive weeks when I work less, and I know many who are the same.