If you note since 2007 there's been a bigger fall in the proportion working weekdays 83.4->81.8 than there has been those working weekends 36.0->35.1 ... I wonder what's happened since 2007? It's not like there's been a recession has there? On the other hand looking back at a like-like comparison to less than a decade ago there are many more now working weekends despite the fact there are marginally less working weekdays.

The long term trend is still clear. But feel free to ignore pesky things like facts.