I am a change agent... I get paid to dream and fritter!
There was a study done in 2005 on this, that is the numbers I mention.
More recent studies show similar, here for example, http://www.itworld.com/lost-productivity-nlsnetworking-080108
http://www.management-issues.com/2007/5/23/research/time-wasting-costs-uk-UKP7bn-a-year.asp
Except that the articles (and they are articles not peer reviewed papers) are not paraphrasing studies; they are paraphrasing POLLS. And those polls are not scientific, nor do they have analytical depth as to causation. But they do pander to senior management's belief that all (subordinate) employees are lazy no good slackers looking to take advantage of the company in any way they can.
NO. Lean isn't about that at all. (nor is it about the 4 minute time difference on the clock) Lean is after true waste, including true non value add time...
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