Spliting house chores with narc spouse

How do you manage to split house chores with your nspouse ? I assume it's hard at every household but I feel ( by comparison with other couples ) that doing it with a nspouse is a whole different game with another set of rules.

In my case nspouse is consistently postponing her tasks. I even believe she does that on purpose so that I feel obliged to assume her tasks . Also , her time management being always directed to her interests means she won't prioritize anything but her stuff. There's something more urgent she has to attend first . On the other hand , she will always monopolize her free time , for instance , she will be on her off day at home ( she works shifts ) and she will choose the end of the business day to go to the gym , despite not having done her part of house duties during the day.