“What we’re going to see is a lot of young people reinventing the wheel,” said Karen Gunderson, 56, who retired this year from her information technology job with the State of Wisconsin after 26 years, a few years sooner than she had intended, saying she felt that public workers were being “turned into scapegoats” for a troubled economy.

“We’re going to waste a lot of tax dollars with young people attempting things that were tried before. You can get people cheaper, but whether you save money, I don’t know.”

The pattern of retirements, while pronounced in some states and towns, has by no means played out everywhere. In fact, a countervailing trend — of delaying retirement and staying put — has been clear since after 2008, when the national recession and the shortage of jobs (and of potential second careers in the private sector) made people queasy about making moves at all.

Certainly, the number of state and local public-sector workers has been shrinking since the second half of 2008, a necessary, useful scaling back in the eyes of some political leaders facing major budget shortfalls. Across the nation, there were 71,000 fewer state government workers in November than there were a year ago, and 180,000 fewer local government workers, federal Bureau of Labor Statistics data shows.

But a broad survey of about 100 public retirement systems suggests a rate of retirement that has remained within a relatively steady range in recent years, said Keith Brainard, research director for the National Association of State Retirement Administrators. “Before I would call this a trend, it would need to continue for another year or two,” he said.

Still, even with lingering queasiness over jobs and the larger economy, there are other signs that the mood of public workers is turning toward retirement, a worrisome possibility for some already precarious, underfunded pension plans.