Inviolable contract

It is hereby declared that in consideration of the contributions by members and in further consideration of benefits received by the state from the member's employment, KRS 161.220 to 161.710 shall constitute, except as provided in KRS 6.696, an inviolable contract of the Commonwealth, and the benefits provided herein, except as provided in KRS 6.696, shall not be subject to reduction or impairment by alteration, amendment, or repeal.