Cheri wrote:
None of the work needs to be done. How about he does it for nothing
but I provide him with a place to live?

I would ask him what he thinks is fair, since it does include room and
board. If he usually makes $38 per hour, and he's doing it for room
and board. I would say a couple of hours a day would cover the room
and board in fine style, and then you should pay him the rest of what
you decide is a fair price.

Cheri

The reason he makes $38/hour is because he doesn't work all the available
hours so he has to make extra when he does work to cover the slack times.
This is a slack time for which he would normally be getting nothing anyway.