California cities may see their annual pension costs rise under a new policy from the state’s retirement system, threatening to foist added financial pressure on those already struggling to pay for promises to public employees, Bloomberg News reported. The California Public Employees’ Retirement System (CalPERS) is advancing a staff recommendation that would shorten the amortization period for new pension liabilities from 30 years to 20. That would boost the system’s funded ratio, require localities to pay off the debt sooner and allow the pension to recover faster from market downturns, according to a staff report. Approved by a CalPERS committee on Tuesday, the full board was set to vote on the changes yesterday. The ramped up schedule, while positive for the solvency of the pension system by letting it book gains faster, would make market losses felt more swiftly by local governments and require them to pay more into the retirement fund in at least the first few years. The shorter period reduces the possibility that the system, which currently has about 68 cents for every dollar in liabilities, falls below 50 percent funding, board member Bill Slaton said during the meeting.