(a) The municipality or county may continue to pay all or a portion of the injured employee’s regular compensation and related benefits until such time as the employee is physically able to perform the duties of his or her employment, or the employee retires on a disability retirement allowance, whichever occurs first.
(b) The maximum portion of the injured employee’s regular compensation that the municipality or county may continue to pay is the difference between the total amount that the injured employee is receiving from workers’ compensation benefits and disability benefits from the trust fund created under Section 45-2-21 and the amount of the employee’s regular compensation.
(c) At such time as the injured employee is no longer receiving any workers’ compensation benefits or disability benefits from the trust fund created under Section 45-2-21, the municipality or county may continue to pay the full amount of the employee’s regular compensation for such period of time as allowed under the policy.