The Deloitte Access Economics, in a report, found that 39.8 per cent of Australians were not getting enough sleep.
Deloitte estimated that sleep deprivation accounted for 14.16 billion dollars in lost productivity in the financial year ended in June 2017 while costing Australia's health system 1.42 billion dollars.
The report found out that almost 400 Australians die each year as a result of driving or operating heavy machinery while fatigued.
Dorothy Bruck, chair of the Sleep Health Foundation, said 7.4 million Australians suffered from a lack of sleep.
Sleep deprivation can be a contributing factor in heart disease, stroke, diabetes and depression.
"The cost of sleep deprivation is utterly alarming and confirms we need to take urgent action to put sleep on the national agenda," Bruck told Australian media on Tuesday.
-NAN
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