More action is needed to tackle the growing problem of workplace stress, the Trades Union Congress (TUC) has said.
The issue must be taken more "seriously" and offending companies should be prosecuted, TUC general secretary Brendan Barber stated.
Commenting on the publication of a study on the issue by the Health and Safety Executive, the Chartered Institute of Personnel and Development and Investors in People, Mr Barber noted that the problem is affecting an increasing number of employees.
Describing the report as "interesting and useful", Mr Barber suggested that further measures are needed.
"Excessive workplace stress is easily preventable if employers follow the HSE's management standards, and the key to changing behaviour is a strong regulatory framework supported by support, education and enforcement," he remarked.
According to recent HSE figures, illness and injury at work has increased in the last year.