New Jersey § 3a:38a-4

§ 3a:38a-4.

The right of election of a surviving spouse and the rights of the surviving spouse

may be waived, wholly or partially, before or after marriage before, on or after the

effective date of this act, by a written contract, agreement or waiver, signed by

the party waiving after fair disclosure. Unless it provides to the contrary, a waiver of “all rights” (or equivalent language)

in the property or estate of a present or prospective spouse or a complete property

settlement entered into after or in anticipation of separation or divorce is a waiver

of all rights to an elective share by each spouse in the property of the other and

a renunciation by each of all benefits which would otherwise pass to him from the

other by intestate succession or by virtue of the provisions of any will executed

before the waiver or property settlement.