You can’t make this stuff up, IBM Researchers Try to Measure Employee Well-Being Using Technology. This is why it’s so important to think about what you’re doing before you start doing it. You don’t need to wait to see what will happen.
You already have countless humans that are adept at detecting nuisances in their environment, they’re called employees. Perhaps, let them pick where they want to work. They’ll do just fine to consider, temperature, lighting, noise and many other factors.
And you have another legion that should be able to observe when people aren’t happy. They’re called managers. Managers should be doing something about satisfaction instead of spending money to build sensors to do their jobs as poorly as they themselves already do the job.