The best approach to dealing difficult board directors is preventative. Make sure that the goals of your agency’s board members are clear and they can combine their own vision with that of the company. This will reduce the number of situations in which a member’s advice can be counterproductive. If a problem does arise, address it quickly and don’t put off bad behavior. The longer you wait, the worse it gets.
It begins with direct intervention – a one-to-one meeting with the person who is causing trouble. It’s crucial to be professional and calm, however be direct in your conversation and clearly set out your concerns. Ideally the person will agree with you and alter their behavior, but in the event that this doesn’t work, try stepping up to group intervention with the chair and/or someone else that the board member respects highly. You might want to look over your agency’s Values statement and/or other governing documents for words that could be used as a reference point for acceptable behavior, which includes treating people with respect.
Another option is to ask the person to step down from the board (ideally at a time of choice, and voluntarily or, if required, through a vote of confidence). This will require careful preparation and planning in advance of the meeting or conversation. For instance, ensure that you are aware of the main questions you’re looking to discuss and prepare an organized response in place. Be assertive, but maintain the appropriate tone.
https://theboardmeeting.blog/how-do-you-keep-up-with-trends-in-your-industry