From CalPERS:
The California Public Employees' Retirement System Board of Administration today approved health care rate and plan changes for 2018 that include an average 2.33 percent overall premium increase. Individual plan increases may vary, but the overall Medicare and Basic (non-Medicare) increase is the lowest in 20 years. ...
Lower overall premiums were driven largely by an average decrease of 2.5 percent for Preferred Provider Organization (PPO) plans. Premiums for members enrolled in Health Maintenance Organization (HMO) plans increased an average of 3.71 percent, including an 8.2 percent increase for Kaiser.
CalPERS Medicare plan enrollees will see premiums increase by 1 percent overall, with HMOs rising an average of 4.27 percent and PPOs averaging a decrease of 2.04 percent.
The rates will take effect on January 1, 2018. ...