Louisville Mayor Jerry Abramson says hiring retired staff members does not cost the city extra money.Former Chief Financial Officer Jane Driskell recently returned to a new position after retiring in November. Her new salary is 15 thousand dollars lower, but she is also earning retirement from her old job.Abramson says his staff did not think Driskell would be needed again when she left."No we really didn't," says Abramson. "Nor did we realize the major role she'll be playing in overseeing the stimulus package funds that need to be committed quickly over the next three of four months."Driskell cannot earn additional retirement benefits. Abramson says her current retirement fund includes money she already paid into the system.