Periodic cost-of-living adjustments (COLAs) in some form are provided on most state and local government pensions. The purpose of a COLA is to offset or reduce the effects of inflation on retirement income. Considerable variation exists in the way COLAs are designed, and in many cases they are determined or affected by other factors, such as inflation or the financial condition of the plan. COLAs add both value and cost to a pension benefit. Public pension COLAs have received increased attention as many states look to make adjustments to the cost of benefits amid challenging fiscal conditions and the current low-inflationary environment. This brief presents a discussion about the purpose of COLAs, the different types of COLAs provided by government pension plans, and an overview of recent state changes to COLA provisions.