Waiver of Medical Plan. Any bargaining unit member who is currently insured under the Board's insurance plan and can validate that he/she is covered under a non- bargaining unit member's spouse's insurance plan may elect to refuse membership in the Board's insurance plan and receive a five hundred-dollar ($500.00) cash incentive. A bargaining unit member employed by the Board on a fifty percent (50%) contract or less will be eligible to receive a two hundred and fifty-dollar ($250.00) cash incentive.