And has Sundays off. I work on Saturdays and also have Sundays off.

Him being busy and not having time for himself is:
1. Buying groceries (he works at a grocery store)
2. Doing laundry
3. Cooking (he is single with no kids)
4. Maybe preparing a lesson for the private English lessons that he gives
5. Talking to family on the phone (he's an expat living in Berlin)

This is what he is doing that he tells me he is so busy and has no time for himself...

And I only contacted him on Sundays, the day he has off. And he was always home either talking to family on the phone or cooking.