Table 1.

Total Working Time Lost Across Five Different OECD Countries

Country	U.S.	UK	Germany	Japan	Canada
Sleep: % < 6 hours	18%	16%	9%	16%	6%
Sleep: % 6 to 7 hours	27%	19%	21%	40%	20%
# Full-time workers (in thousands)	121,490	22,733	28,965	47,790	14,559
# Part time workers (in thousands)	27,340	8,296	11,245	14,000	3,387
Days lost (full-time): < 6 hours	528,377	87,372	60,545	185,289	22,089
Days lost (full-time): 6 to 7 hours	479,643	64,447	90,023	282,009	41,888
Days lost (part-time): < 6 hours	118,906	31,885	23,506	54,280	5,139
Days lost (part-time): 6 to 7 hours	107,938	23,519	34,951	82,614	9,745
Days lost: total	1,234,864	207,224	209,024	604,191	78,861
Hours lost: total	9,878,910	1,657,792	1,672,192	4,833,532	630,886

Notes: sleep-per-day data based on data from the National Sleep Foundation (2013) representative survey. The proportions of people sleeping less than six and between six and seven hours have been calculated by using the weighted average among the proportions for workday and weekend sleep patterns. The numbers of full and part-time employed workers in each country comes from the OECD labour statistics database. Note that we assume 250 working days per full-time employee per year and 125 working days for part-time employees. As an example, the total days lost due to insufficient sleep in an economy are calculated by multiplying the total number of workers (full- and part-time) by the proportions of short sleepers (< 6 hours and 6 to 7 hours), multiplied by the total number of working days (full-time: 250; part-time: 125) plus the percentages of work impairment due to absenteeism and presenteeism (< 6 hours: 2.36%; 6 to 7 hours: 1.47%). To calculate the total hours lost we multiply the working days by eight hours.