If the dictionary and the lexicons cannot give the exact definition and description of a workaholic, a better idea would be to take a look at Shah Rukh Khan's recent schedule.
In less than a week, King Khan cheers his IPL team, the Kolkata Knight Riders' on two different venues in India and before one can say 'wow' he is off to shoot for his home production, BILLU BARBAR and the latest quiz show, KYA AAP PAANCHVI PAAS SE TEZ HAIN.
If that is not strenuous enough, he also turns up to perform at an award function in London, and before one can bat an eyelid he is physically present to unveil his second wax statue (after Madame Tussauds) at the Graven Museum in France. In between he also has time for product endorsements and keeping the press happy by answering all their questions regarding his team and his latest quiz show. We have also heard that he has cancelled his plans for the annual vacation with his family due to his extra busy schedule.
Well, if Bollywood's global superstar does not signify workaholic; we wonder what/who else does!