BOULDER, Colo. (AP) - For many of today's workers, retirement does not mean the end of work.

BOULDER, Colo. (AP) For many of today's workers, retirement does not mean the end of work.

Rather, they're entering a phase called "bridge employment," which economists describe as the period between leaving a career job and fully retiring.

Boston College economist Joseph Quinn says his research shows retirement for many seniors occurs over time, rather than as a single event. He attributes this to a changing economic picture.

Bridge jobs often have lower pay, but Quinn says seniors are taking them voluntarily because they offer advantages like flexible hours and part-time work.

According to the University of Michigan's Health and Retirement Study, roughly 6 of 10 people of retirement age plan to stay in the workforce after leaving their career jobs.