I'd be a tiny bit skeptical of the effectiveness of
an employer-sponsored "happiness workshop," but everyone who took this particular workshop seemed to come out of it a lot happier.
It's as if all the founders met up at a conference or at a Meetup and decided how they should create a fun company culture. We had a screen so that our developers in South America could see us and so we could see them, and that was cool, but in my experience, the mixing of the seats never really did anything except interfere with our workflow.