Well done for reading only the first few words of the post you replied to. They were talking about the financial impact to those who work on an hourly wage.
Increase the hourly wage to account for 8 less hours in the work week.
It sounds so easy when you just say it like that.
Couldn't it be the case? France managed several times to reduce the number of hours while maintaining the exact same salaries. Not saying this is perfect or it should be the only thing that's done but I really don't see any argument on why it cannot be done.
Edit : typos
You got me there. It’s behind a paywall. I couldn’t read it. My opinion that 4 day week is a good thing for the UK still stands :)