Lufthansa says it may slash jobs if its workers' council doesn't agree to widespread cost cuts, according to a report in the Financial Times Deutschland newspaper. Airline management is aiming for 40 to 60 percent reductions in personnel spending, a recent management board report said. According to the report, the airline will shut down a customer service center that employs 350 people in Kassel, Germany, unless it "manages to reduce personnel costs by around 40 percent," the Financial Times reported. Those jobs would go to South Africa, Istanbul or Dublin, unless employees agree to wage cuts and productivity increases, a Kassel official told the AFP news agency. Lufthansa would only verify that costs at the service center are too high.