I'm glad to see someone trying this out. It's something I've been wondering about [1], and it seems pretty uncommon. I'll be looking forward to seeing how this works out for them, and any other companies that are so inspired to try to improve the status-quo.

Frankly the American culture of working continuously seems like a negative to employee and employer both--and even if it were only a negative to one, it would be something worthy of change.

[1] https://news.ycombinator.com/item?id=8053580