Utility Maximisation Subject to Income and Time Constraints
Despite its funny title and although it is quite old you may find this paper interesting:

The economics of the afterlife by Scott Gordon in the JPE. His argument is basically that in the presence of an infinite amount of time there would still be a rate of time preference.

A follow-up paper disproving Gordon's claim was written by Amegashie, but I haven't checked that one in detail. You can find that  here.

Nb credit where credit is due: I would probably never have read the first paper without Yoram Bauman's presentation "Hyperinflation in hell"