The Great Place To Work Institute is an interesting concept. They have established an ISO like standard for determining and grading whether or not your company is a great place to work. They offer evaluations to help company's build marketable bragging rights, something that can make a corporation more competitive in the job market, and more likely to retain their best employees. They have a 5 point concept: Credibility, Respect, Fairness - with these three intended to build Trust, and Pride and Camaraderie. They maintain lists of leading companies, and small companies to bring cache and legitimacy to the ratings.
This is perhaps geared towards bigger companies and corporations, but there are lessons here for everybody about the workplace, including small companies, and communities of coworkers.