Notwithstanding any provision of this part to the contrary, if an LEA has established a teachers' sick leave bank, then the LEA may permit any employee of the LEA who is not a teacher to participate in either the teachers' sick leave bank or a classified employee sick bank; provided, that the employee is eligible to accrue sick leave under the employee's contract of employment. The requirements for teachers' participation in the sick leave bank in §§49-5-806,49-5-807,49-5-808 and49-5-809 shall apply to an employee who is not a teacher and who is seeking to participate in the sick leave bank. Nothing in this section shall be construed to interfere with existing LEA policies relative to the sick leave bank that are in effect on May 1, 2014.