We have written these rules so that employers and group sponsors can understand how the retrospective rating program works, both generally and in detail. These rules are meant to be read together. Often, we will make simple statements in one section, followed in another section by more detailed explanations. We hope that the simple statements are helpful, but if there appears to be a conflict between the simple statements and the detailed explanations that follow, it is the detailed explanation that tells you what we do and how we do it.