The chairman of the board should confirm to shareholders when proposing re-election of a director that, following a formal performance evaluation, the person's performance continues to be effective and continues to demonstrate commitment to the role. Any term beyond six years (e.g. two three-year terms) for a director should be subject to particularly rigorous review, and should take into account the need for progressive refreshing of the board. Serving more than six years is relevant to the determination of a non-executive director's independence.