I'm in agreement with all the answers so far. I would add that having just read, "Delivering Happiness" by Zappos founder and CEO Tony Hsieh, I'm reminded that having a clear company culture and hiring for culture fit is imperative. As a former HR manger, I saw how inattention to this impacted turnover and organization success over and over. I would be glad to talk over how you have established company values and are realizing those to support the success of your business, and retention.