The affairs of the association shall be managed by a board of directors which shall consist of nine persons appointed by the Secretary of the Department of Labor. To be eligible for appointment, a person must be an owner, employee, or agent of a member self-insurer, and should be experienced in the field. In the initial appointments, four directors shall be appointed for a two year term and five shall be appointed for a four-year term. Subsequent terms shall be for a period of four years. Vacancies on the board shall be filled for the unexpired portion of the term in the same manner. Directors shall be entitled to no compensation for their services as such, but shall be entitled to reimbursement from the association of expenses incurred in carrying out their duties. The board of directors shall designate a registered office and appoint a registered agent and shall continuously maintain the same, and shall file with the Secretary of State a certification thereof.