To the long list of reasons American companies aren’t hiring  business losses, tight credit, consumer retrenchment  add the fact that many of their older workers are unable, or afraid, to retire.

In other parts of the developed world, people are retiring as planned, because of relatively flush state and corporate pensions that await them. But here in the United States, financial security in old age rests increasingly on private savings, which have taken a beating in the last year. Prospective retirees are clinging to their jobs despite some cherished life plans.

As a result, companies are not only reluctant to create new jobs, but have fewer job openings to fill from attrition. For the 14 million Americans looking for work  a number expected to rise in Friday’s jobs report for August  this lack of turnover has made a tough job market even tougher.

Consider Barbara Petrucci, a dialysis nurse who had expected to stop working soon, or at least scale back to part time. Now that her family savings have been depleted by market declines, she expects to stay on the job for a long, long time.