Tennessee Code Title 50. Employer and Employee § 50-6-214

(a) The administrator or the administrator's designee shall order appropriate workers' compensation benefits and loss adjustment expenses associated with the claim to be paid on an equal basis by the insurance carrier or carriers and the self-insured employer, as appropriate, in any case where:

(b) Upon an agreement by the parties or a court order as to which entity is responsible to pay the workers' compensation benefits to the employee, the entity responsible for the provision of workers' compensation benefits shall reimburse the other entity all moneys paid for or on behalf of the employee as ordered by the administrator or the administrator's designee, plus interest from the date of payment at the rate set by § 47-14-121.