Tenn. Code Ann. § 17-2-111

The expenses of the chancellor, judge or appellate judge who serves as assigned by the chief justice under § 17-2-109 or § 17-2-110, or the retired judge designated or assigned in accordance with § 16-3-502(2), shall be certified by the chancellor, judge, appellate judge or retired judge pursuant to policies and guidelines promulgated by the supreme court. The expenses shall be paid in addition to the regular salary of the judge.