And Christiana Stoddard and Peter Kuhn (2008) found that, since 1983, teacher on-the-job hours have increased by roughly one hour perweek, while after school time devoted to work has jumped by 34%.
In this study, BCG required its most intensely workaholic team members to take pre-scheduled, regular (one day perweek) and complete (no phone calls or emails) time off during the course of a project.
The group, which began surveying in 2005, hoped to count one million additional people playing sports three times or more perweek by this year, in time for the Olympics.