Mintzberg's research found that managers typically work about 40 hours,and less than 30 hours is not unheard of.

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According to Mintzberg's research,long hours at work are standard for managers,with 50 hours being typical and up to 90 hours not unheard of.Since then,a 1999 survey by John P.Kotter of the Harvard Business School found that the general managers he studied worked just under 60 hours per week.

Mintzberg's Research Found That Managers Typically Work About 40 Hours,and