Michael Armstrong is the UK's bestselling author of HRM books. With over a million copies sold, his books have been translated into twenty-one languages. He is managing partner of E-Reward. Prior to this he was a chief examiner of the Chartered Institute of Personnel and Development (CIPD). He is the author of Armstrong's Handbook of Human Resource Management Practice, Armstrong's Handbook of Reward Management Practice, Armstrong on Reinventing Performance Management, and other titles published by Kogan Page.