What sort of denomination might believe that those in Heaven work?

At a recent "celebration of life" for my brother-in-law's step-dad (which I did not attend, this is secondhand knowledge), BIL's step-brother made reference to the dad now getting to work forever in Heaven. "Work" as in, doing a 9-5 job like you do on Earth. I don't believe the step-brother is formally a part of any denomination. What might be the theology behind such a belief?