Rule 408 - Compromise Offers and Negotiations(a) Prohibited Uses. Evidence of the following is not admissible on behalf of any party either to prove or disprove the validity or amount of a disputed claim or to impeach by a prior inconsistent statement or a contradiction:(1) furnishing, promising, or offering, or accepting, promising to accept, or offering to accept a valuable consideration in order to compromise the claim; and(2) conduct or a statement made during compromise negotiations about the claim. Compromise negotiations include alternative dispute resolution.(b) Exceptions. The court may admit this evidence for another purpose, such as proving a witness's bias or prejudice, negating a contention of undue delay, or proving an effort to obstruct a criminal investigation or prosecution.