Last week the WSJ printed an article describing how CEOs around the world spend their time. The article drew on data from a larger study, the Executive Time Use Project , and relied on reports of time use by CEO’s personal assistants. The article indicates that assistants only tracked activities that lasted over 10 minutes in a single week selected by researchers. That assistants, rather than the CEOs themselves, were keeping track of time use leads me to believe the reports are relatively accurate. After all, the assistant probably does most of the scheduling of a CEOs day and CEOs are likely too busy to track data time or to agree to record their time use.