Short version? Hide the bad news.
Public Pensions Cook the Books - WSJ.com:
"Here's a dilemma: You manage a public employee pension plan and your actuary tells you it is significantly underfunded. You don't want to raise contributions. Cutting benefits is out of the question. To be honest, you'd really rather not even admit there's a problem, lest taxpayers get upset."
What to do? For the administrators of two Montana pension plans, the answer is obvious: Get a new actuary. Or at least that's the essence of the managers' recent solicitations for actuarial services, which warn that actuaries who favor reporting the full market value of pension liabilities probably shouldn't bother applying.
....The numbers are worse using market valuation methods (the methods private-sector plans must use),.... Using that method, University of Chicago economists Robert Novy-Marx and Joshua Rauh calculate that, even prior to the market collapse, public pensions were actually short by nearly $2 trillion. That's nearly $87,000 per plan participant. With employee benefits guaranteed by law and sometimes even by state constitutions, it's likely these gargantuan shortfalls will have to be borne by unsuspecting taxpayers."