Talisa, it is the remaining workload.
For instance, as the sahp I do all bills and accounting, childcare, appointment booking, holiday booking, washing, ironing, bed making, shopping, most of the cleaning, all of the garden, half or more of the cooking, all of the tidying etc.
He works, does the bins, takes care of the cats, and does halfish of the dinners and the remaining workload. Which includes the dishwasher after dinner, or wiping down the counters.
It's hardly taxing.
And I would find it terribly unfair to have to run around after DH mon - fri from 6pm-bedtime just because I'm on maternity leave, and it's not a weekend.