Clear desks and a clean environment don't bring the best out of people.
It turns out that people are a lot more productive (up to 30%) if they have control over the way their work space is set up and if they can "decorate" it how they want. A sense of autonomy counts for a lot.
The empowered office was a great success — people got 30 percent more done there than in the lean office, and about 15 percent more than in the enriched office.These are large effects; three people in empowered offices achieved almost as much as four people in lean offices. The enriched office was a modest success, but the disempowered office produced low productivity and low morale.