Louisville Mayor Jerry Abramson has brought the city's former chief financial officer out of retirement to run a new office.Jane Driskell retired as Metro CFO in November, but this week she began work as the head of the new Office of Management and Budget.She says she's now a so-called 'double-dipper,' meaning she draws retirement benefits while earning a salary."I don't have that opportunity to collect a second retirement through the public sector," she says. "So I receive my one retirement and I'll receive a salary for my new job. No different than in the private sector if you retired from one job and started another job."Driskell's first task in her new job is to cut costs by improving Metro Government's efficiency. She won't speculate if that means layoffs, but some of her ideas for cuts will be included in the Mayor's budget proposal in May."We're facing a budget situation that we haven't faced in any recent past. We're really going to have to look at the way we do business," she says.