Button v. Button, 131 Wis. 2d 84, 388 N.W.2d 546 (1986)
A Wisconsin statute allowed spouses to enter agreements about how they would divide property in the event of a divorce. Courts had to enforce the agreement unless it was inequitable. Abrahamson established how courts made this determination. She held that a martial property agreement is equitable where: (1) each spouse made fair and reasonable disclosure of his or her financial status; (2) each spouse entered the agreement voluntarily and freely; and (3) the agreement’s division of property upon divorce is fair to each spouse.