Here's the problem I have with this argument. If you are bored and disengaged at your job for 8 hours, you are likely to be just as bored and disengaged for 6 hours if all you change is the amount of time you spend there. The better approach would be to get your organization to sit down and diligently work out why so many of their jobs are so boring and disengaging and go after that. If, in the process, we determine that those jobs can be done in fewer hours, then great. Sure, maybe there are some jobs that are inherently boring, but maybe through diligent analysis, we could find ways to minimize the need for that type of work, and maybe create more compelling jobs in the process. But just shortening the work week doesn't seem to address the problems most people have with their jobs.

Even at 6 hours a day, we spend enough time at our jobs that job satisfaction is a significant portion of your overall life satisfaction. I'm all for 6 hour work days, but the more important point by far is making the content of our jobs engaging and enjoyable.