Managers lack empathy with their staff, have poor leadership skills and are often to blame for workers leaving their job, according to a new report.

A survey of more than 1,200 employees in several countries, including the UK, found they would be up to 60% more productive if they had the "best ever" boss. Most of those surveyed by management consultants DDI said their self-esteem had been damaged by a boss, while two out of five admitted that they had quit a job mainly because of their manager.