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, 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 a number of other books on HR published by Kogan Page including Armstrong's Handbook of Performance Management and Armstrong's Handbook of Strategic Human Resource Management.