Or if you insist on keeping 9-5, then why not do it 4 days per week? After all, why do we only work 5 days/week? Could it be that maximizing the output of corporations is not the sole priority of a country?
"In 1908, a New England mill became the first American factory to institute the five-day week. It did so to accommodate Jewish workers, whose observance of a Saturday sabbath forced them to make up their work on Sundays, offending some in the Christian majority. The mill granted these Jewish workers a two-day weekend, and other factories followed this example. The Great Depression cemented the two-day weekend into the economy, as shorter hours were considered a remedy to underemployment." - https://www.theatlantic.com/business/archive/2014/08/where-t...
Then, influentially, Henry Ford dropped it down from six days of 14-16 hours, in 1926. http://www.todayifoundout.com/index.php/2016/09/five-day-wor...
And, for most of us, "less hours" is going to equal "less pay". How do you imagine that we should deal with that? Or do you imagine that the corporations (or the country) are just going to pay us anyway?
Most people earn enough to live, and would do if they worked 20 hours less, it's just sucked away with various zero sum games like rent.
Imported goods make up a fairly small fraction of the average person's budget with the exception of stuff like, a German car say.
This is precisely what "cost of living" is; in higher competition areas, everything is more expensive.