Michael Armstrong is the UK's bestselling author of HRM books. With over a million copies sold, his books have been translated into 21 languages. Based in London, UK, he is managing partner of E-Reward and was previously a chief examiner of the Chartered Institute of Personnel and Development (CIPD). He is the author of many HR titles including Armstrong's Handbook of Human Resource Management Practice and Armstrong's Handbook of Performance Management, all published by Kogan Page.