Assuming you'll jump ship when the economy turns around is only one of the many objections employers have to hiring overqualified candidates.

CNN: What to do when you're labeled 'overqualified'

Our vessel carried a total of 2, 000 fortunate souls, all of whom had the option of walking ashore, taking a ship-organised excursion, jumping in the nearest taxi or hiring a car for the day, which proved most advantageous on Maui and Kauai where the overnight stay encouraged us to be more adventurous.

BBC: Otherworldly Hawaii, for less