I don't understand why the expressions "in the week" and "in the day" are used in the text quoted below. In my humble opinion as a non-native speaker of English, they should be "in a week" and "in a day" instead. Of course I could be wrong. I hope someone helps me.
Quote
It will become increasingly important to build a career you can enjoy later in life. If you’re healthy, you can travel, spend time with your grandchildren and contribute to society and the economy even after you retire. Working carriers will be spread out so that people will work more years, but with fewer workdays in the week and fewer hours in the day.
Unquote
HKman Working carriers careers? will be spread out so that people will work more years, but with fewer workdays in the week and fewer hours in the day. with fewer workdays in their working week and fewer hours in their working day Does that help?
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HKmanWorkingcarrierscareers? will be spread out so that people will work more years, but with fewer workdays in the week and fewer hours in the day.
with fewer workdays in their working week and fewer hours in their working day
Does that help?
CJ