have come together to form the word workplay. Simply this is the convergance of both play and work, where work becomes play for you and you play at your work (and you can play to win if you choose).
An example of work play can be found - someone is working and they choose to decide to make their job/work a game and act like they are playing/ having fun at it...
Workplay is generally time associated to activities where you earn money while playing/ enjoying yourself/ having fun.... It is your choice though, right?