With a more rational retirement system, many more charter schools would give up DB pensions voluntarily.

FORBES: Charter Schools, Pensions and Golden Handcuffs

The number of passengers who took vouchers to voluntarily give up their seats was up 15%.

WSJ: An Airline Report Card: Fewer Delays, Hassles Last Year, but Bumpy Times May Be Ahead

Not long ago, the idea that any economy would voluntarily give up its currency in favour of the dollar was political dynamite.

ECONOMIST: It all depends

Why would a network voluntarily give up invaluable spectrum and distribution that could cost it hundreds of millions of dollars in advertising revenues?

FORBES: Here's How Fox Could Make Billions By Ditching Broadcasting

Walsh is one of the first top European executives to voluntarily give up his bonus, though others have come under heavy pressure to do so.

FORBES: Magazine Article

Side-by-side with the review, the FCC is proposing an incentive-based reverse auction strategy to have TV broadcasters voluntarily give up their spectrum for cellular and data use.

ENGADGET: FCC votes in favor of rethinking spectrum holding rules, goading broadcasters into wireless selloffs

The baby-boom generation, which started to turn 60 this year, contains the largest number of people ever voluntarily to give up work in such a short time.

ECONOMIST: Older workers