A growing number of Americans are returning to the workforce due to insufficient retirement savings, rising living costs, and a desire to stay active. Some are finding gig work through apps or digital platforms, such as Uber, where they can set their own hours and work when they choose. Stu Goldberg, a Ph.D in neuropsychology and experienced running his own business before retiring, chose to drive for Uber due to the flexibility and benefits of meeting people. About 1 in 5 Americans over age 50 who are not retired say they have no retirement savings. Despite these challenges, experts say gig work has advantages and downsides, including limited job protections and wages insufficient to cover on-the-job expenses that can't be written off as tax deductions.