Open The Books - The Minds Will Open is a blog post that discusses the benefits of open-book management:

Smart companies have recognized that using open book management helps eliminate the emotional and subjective conversations. Open book management is based on the numbers - the facts (unless the organization is so corrupt it cooks its books). Business is about numbers - sales, expenses, inventory, profits, cash, stock value and more.

The fundamental purpose of a company is to offer a service that makes money. If your employees do not understand how their every day actions contribute to the bottom line, I will venture to say that you have a lot of unresolved issues in your company that drive you nuts.