Tired workers 'cost economy £611m'

Sleep-deprived workers take six million sick days a year according to a survey, with the cost to the UK economy running to £611 million.

One in five workers surveyed admitted taking a "sickie" because of a bad night's sleep, according to the online poll of 2,044 people by bed firm Silentnight, who appealed for volunteers for research in a sleep clinic.
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