A Contracting Out Agreement, commonly known as a pre-nuptial agreement or “pre-nup” is an agreement made under section 21 of the Property (relationships) Act. These agreements contract out of the Act – meaning that the division of your assets upon separation will occur in accordance with the Agreement, rather than in accordance with the Act. These Agreements, once signed, are binding on the parties unless they are set aside by the Court (which is a very difficult task to do).