Tennessee Code Title 24. Evidence and Witnesses § 24-1-201

(a) In either a civil or criminal proceeding, no married person has privilege to refuse to take the witness stand solely because that person's spouse is a party to the proceeding.

(b) In a civil proceeding, confidential communications between married persons are privileged and inadmissible if either spouse objects. This communications privilege shall not apply to proceedings between spouses or to proceedings concerning abuse of one (1) of the spouses or abuse of a minor in the custody of or under the dominion and control of either spouse, including, but not limited to, proceedings arising under title 36, chapter 1, part 1; title 37, chapter 1, parts 1, 4 and 6; title 37, chapter 2, part 4; and title 71, chapter 6, part 1. This confidential communications privilege shall not apply to any insured's obligations under a contract of insurance in civil proceedings.