More than possibly those numbers could be from the increased numbers of people who've had to take up part-time work who would've been otherwise unemployed.
There is also the conversion to an information economy with a growth in white collar jobs that are usually salaried with hours no longer being tracked.
Most employers report a normal 40 hours per week on paper, but that is usually the minimum expected.
Most employers report a normal 40 hours per week on paper, but that is usually the minimum expected.