KEY POINTS
  • The share of gig workers at U.S. businesses swelled 15% since 2010, according to the ADP Research Institute.
  • This type of work comes with additional financial responsibilities relative to health insurance, retirement savings, taxes, paid vacation time and Social Security, when compared with traditional full-time employees.
  • Nearly a third of certain gig workers (1099-MISC contractors) at companies are over age 55.

The last decade has seen a surge in the number of gig workers, indicating broad economic and demographic shifts and raising concerns around long-term financial security for a growing share of the workforce, according to some experts.

"We're just going to keep seeing more of it," Kerry Hannon, the author of several books on jobs and entrepreneurship, said of gig work. "For the bulk of the population, it's really, really unfortunate."