I was surprised to see this in the WSJ at all. Obviously they did it so they could sow doubt. This entire article is likely PR for ActivTrak though: "Many four

I was surprised to see this in the WSJ at all. Obviously they did it so they could sow doubt. This entire article is likely PR for ActivTrak though: "Many four-day-week employers don’t appear to be operating more efficiently, though, according to data from ActivTrak, a maker of workforce analytics software. Gabriela Mauch, vice president of ActivTrak’s productivity lab, suspects that is because management hasn’t revamped the way teams work."