Flexibility may not be a word you often hear associated with public pension plans. These plans are typically created by state or local policymakers, and changes to the plan structure are sometimes difficult and time-consuming. This is OK for many public pension plans because they cover workers with similar characteristics. It is common, for example, for all teachers covered by a pension plan to have the same retirement benefits regardless of the school district that employs them. All employees have the same benefits; the school districts and employees share in the cost of benefits; and all pay the same amount for those benefits.