Provided, however, that no employment may be offered to a retiree subject to this section unless the employer has made a good-faith effort each school year to fill the position with a nonretired employee without success, and certifies, in writing, that it has done so to the employees' retirement system and to the bargaining agents of all education unions with whom the employer has collective bargaining agreements.
R.I. Gen. Laws § 16-16-24.2