"Churchill, far from being an aristocratic lounger, was a glutton for work ... His working hours were, it is true, hard on his subordinates, extending as they frequently did into the small hours of the morning."
Churchill had a lopsided schedule. He would wake up, work from his bed for a few hours, then sleep through lunch and wake again in the afternoon. He was criticized for not working a proper workday, but he insisted that taking a break in between kept him sharper for longer periods of time.
So he wasn't lazy in that he did nothing—he wrote a series of histories and was one of Britain's most influential prime ministers—but he worked a unique schedule.
Do you have a reference for that? My impression was that Churchill had a fairly intense work schedule. For example, http://www.nationalreview.com/comment/comment-cohen061802.as... :
"Churchill, far from being an aristocratic lounger, was a glutton for work ... His working hours were, it is true, hard on his subordinates, extending as they frequently did into the small hours of the morning."