SACRAMENTO — Current and retired judges will not be subject to the sweeping state pension changes outlined Tuesday by the governor and lawmakers, according to bench officers who were briefed on the details.

Future judges, however, will likely have to contribute more to their pensions based on new rules that will require workers to pay at least half the costs of their pension benefits. Currently, judges pay 8 percent of their gross salaries toward their retirement. That figure could rise closer to 15 percent for judges joining the bench in 2013, said San Diego County Superior Court Judge David Rubin, president of the California Judges Association.