Notices under this Agreement must be in writing and will be deemed given when delivered in person, one business day after being sent by overnight courier, or four business days after being mailed by certified mail. Notices to Corporation must be addressed to Barrett Business Services, Inc., Attention: Chairman of the Board, at Corporation’s headquarters address. Notices to Executive are to be sent to the last address Executive has provided from time to time to Corporation’s human resources department. Either party may change its address for notices by giving notice of the change to the other party.