A public employee pension plan for the state of Kentucky adds unearned years of service to years of actual service in determining pension benefits for employees in certain high-risk occupations (e.g, firefighters) who become disabled before they reach the minimum retirement age under the plan. They do not do so for employees who become disabled after having already reached the plan’s minimum retirement age (instead, basing benefits only on actual years worked). The purpose is to provide benefits to disabled employees that are on par with normal retirement benefits. The affect of the provision is that some older disabled workers receive pension benefits that are less than those that younger disabled workers can receive. Does this violate the ADEA?