Six flight attendants for Delta Air Lines Inc. are suing the airline because their profit-sharing checks were smaller because of a union dispute.
The flight attendants used to work for Northwest Airlines, which Delta bought in 2008. The combined work force voted to get rid of several former Northwest unions. The Association of Flight Attendants-CWA is disputing the election, which it lost narrowly.
Delta has said it can't change the pay and work rules of former Northwest flight attendants until the dispute is settled. That included smaller profit-sharing checks last month.
The federal lawsuit in Minneapolis claims Delta is discriminating against its workers because they used to be in a union.