Fair Play by Eve Rodsky is a book that describes a system for couples to equitably divide domestic labor and mental load, treating the home like a business with clear responsibilities. It provides a practical guide with a card-game-like system to help partners fairly distribute tasks, reignite their relationship, and make time for personal pursuits, often called “Unicorn Space”. The core concept is “full ownership” of a task from start to finish, preventing the unequal burden of “invisible work” that often falls on one partner, usually women.