How much (or little) should a husband help at home?

Halachically, does a husband need to help at all? Who needs to do the dishes, laundry and the like? What if the wife always needs help during his learning or work time? What if she’s a very needy person who should be handling more? What if he helps, but the wife doesn’t like the way he does things? What are healthy expectations for boys and girls getting into marriage? What if there’s a gap between expectations and reality?