A prenuptial agreement, in order to be valid, requires a full and fair disclosure of the earnings, property, and financial obligations of each party. If the parties do not submit a voluntary waiver in writing to disclose their financial obligations, their prenup may not be enforceable by the court.
A couple cannot sign this type of agreement under coercion or duress, it must of their own free will. Additionally, the agreement must be in writing and notarized, include full disclosure at the time of execution, be fair and just for both parties, and be executed before the marriage.
The parties must also either each be represented by independent lawyers or willingly waive their right to an independent lawyer in writing.