interesting or useful for sb to do :
It will be worth your while to come to the meeting.
He'll do the job if you make it worth his while (= pay him well) .
interesting or useful for sb to do :
It will be worth your while to come to the meeting.
He'll do the job if you make it worth his while (= pay him well) .
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005