(By David Masters) Millions of working days are being lost every year as Britain's long-hours culture afflicts employees with work-related stress, depression and anxiety.

According to research by Aviva Risk Management Solutions (ARMS), 13.5 million working days were lost in 2007-08 due to work-related mental health problems.

ARMS believes the problem is set to heighten as businesses stretched by the recession put additional strain on employees.

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