Ours is more based on time and what we can do, yes Df does the garden but he enjoys it, loves going buying new plants where I couldn't tell the difference between a plant and weed (well maybe not that bad,lol). But he also will help out with housework, cooking etc. I work 2 days a week so I have more time at home to do cleaning and cooking but when I'm at work he'll do all that.
And I usually take the bins out bring them in, putting stuff together or tuning in TV's and that sorta thing I do cause Df is hopeless.