I think we may have some cases of mass psychogenic illness. It's only sensible management to take any complaint seriously and see what it's all about. You must investigate them. But you don't omit finding out things like what they think of their boss, if there have been things at work that upset them, and so on. There's no doubt that whatever we're looking at is complex.
Buildings are containers.
The container can be the problem, but so can the contents. We should try to address the complex work environment rather than just the building environment. I'm always wary of those who set up a study to find what they're looking for. Methodologically, that can be said of many SBS studies. If you only look at building variables, then of course you find associations.