I found this article and I think it's a very interesting idea, but I also think that limiting it to just Google employees may be missing opportunities for more knowledge. Google is known for going the extra mile to try and retain employees, to approach the workplace as a place to desire to be. I feel like this needs to be expanded to high stress jobs that don't fall under the purview of Google's umbrella. Like, say, teachers. Or fast food workers. Or call center employees.
I say this mainly because I used to work for a satellite tech support call center and it was the most stressed out period of my life. I somehow did it for two and a half years, but I constantly had the impression that we were never more than cogs to anybody above my supervisor. And in our building but separated by a wall that no employee was supposed to cross (though I found a reason or two to do so) was the sales division. They were doted on. They got bonuses! The employees smiled, like a lot! It was night and day between the two divisions, and I think it came down to the fact that tech support could only ever lose money, and sales could only ever earn it. Boosting performance for us was 'losing less money' (i.e. spending less time on the phone) and boosting performance for them was 'earning more money' (i.e. closing more sales). So I'm convinced that there were trickle down effects. Spend too much time on the phone with a customer, even if that means building a slightly better connection with them, and you would get scolded in my division and probably praised in theres.
Ultimately I felt like it was a work environment that could have benefited extensively from work environment research like what you described in the article. And its a little disappointing that Google is not including 'toxic' work environments and only limiting this study to it's own people.