In this paper we examine the dynamics of businesses headquartered in California. In particular, we ask whether California companies are shifting their operations to other states-in terms of either the number of business establishments or the level of employment-through expansions and contractions of existing establishments, as well as births and deaths of establishments. These types of changes could be informative about the business climate in California-perhaps most importantly changes in births of new establishments, which may be most responsive to economic, regulatory, and other conditions that create variability in profitability across states.