Social Security actuarially reduces benefits if taken early and actuarially increases benefits if taken late.

FORBES: Three Rules to Higher Social Security Benefits

This may work for pools of assets, such as mortgages, the behaviour of which can be actuarially assessed.

ECONOMIST: Credit-rating agencies

With the stroke of a pen and no new money from corporate, the GM pension could be fully funded actuarially anyway.

WSJ: Andy Kessler: The Pension Rate-of-Return Fantasy

Korea has a tradition of workers retiring at 55 and of women leaving the workforce at marriage, both actuarially devastating.

FORBES: Morning Calm, Disturbed

He and his two colleagues believe the deficit has "fallen back somewhat", but that the December 2012 actuarially measured deficit will be somewhat greater than it was three years ago.

BBC: Holy pension hole

These adjustments are supposed to be actuarially neutral--meaning if you live to the average age, you get about the same whether you start collecting smaller checks early or bigger checks later.

FORBES: The 62/70 Solution

Although notional accounts are actuarially fair, some might think them socially unfair, because they strip out redistribution among pensioners: the better off pay in more (and so receive more) than the poor.

ECONOMIST: State pension systems that mimic private accounts

When you leave the company or retire, you transfer 401(k) assets to the pension plan, and the pension plan converts the rollover amount to an annuity that is actuarially equal to the amount you transferred, guaranteeing you additional lifetime payments in excess of your basic pension checks.

FORBES: How To Make Your 401(k) Last Forever: The Pension Rollover