The share of Americans working as independent contractors has declined since 2005, according to data out Thursday from the Bureau of Labor Statistics.
The report, the first from the agency since 2005, contradicts other recent studies that find the American worker is becoming less bound by the traditional employee-employer relationship. But it also found that the number of independent contractors has grown even as the share has declined.
Proponents of independent contracting say it provides greater flexibility for workers and lower costs for employers. But critics note it has ensnared people in low-wage jobs without benefits or predictable schedules.
Much of the attention on alternative work relationships in recent years has focused on the rise of the app-driven gig economy in which consumers can summon an independent contractor through their phones to drive them around or clean their houses.
The bureau report does not estimate the size of the so-called gig economy. In its May 2017 survey, the bureau did ask questions to gauge how many people found jobs through a mobile app and were then paid via that app. Those numbers are expected to be released later.
Instead, the data focused on a broader category of workers categorized as the contingent and alternative workforce, which would include gig workers, independent truck drivers, and contract workers who lift boxes at warehouses.
Contingent workers are defined specifically as people who do not expect their current jobs to last long and can include wage and salary workers.
Alternative work relationships include independent contractors, on-call workers, and those provided by temp agencies and contract firms.
Using different estimates, the share of contingent workers was between 1.3 percent and 3.8 percent in May 2017, the bureau said. That's down from 1.8 percent to 4.1 percent in February 2005.
Independent contractors — by far the largest form of alternative work and one that includes Uber and Lyft drivers — were estimated to make up 6.9 percent of total employment in May 2017, down from 7.4 percent in February 2005.
The other forms of alternative work were little changed, the bureau said in a news release.
The bureau counts contingent or alternative jobs only if workers hold those jobs as their sole or primary means of employment, which leaves out many workers who drive for Uber and Lyft on the side.
Though the share of independent contractors has declined, the overall number of those workers has increased, according to the data. In May 2017, 10.6 million people were employed as independent contractors, up from 10.3 million in February 2005. The number of on-call workers and those provided by temp agencies and contract firms also rose slightly.
Other studies have shown an increase in the share as well.
Lawrence Katz of Harvard University and Alan Krueger of Princeton University released a study two years ago that found 8.4 percent of workers in 2015 were working as independent contractors, up from 6.9 percent in 2005.
Internal Revenue Service data back up that conclusion, showing a rising share of people who are independent contractors and who have no W-2 income, Katz said.
It's possible seasonality could be affecting the bureau results, as the 2005 survey was taken in February and the 2017 survey was taken in May.
However, Katz and Krueger compared February 2005 data to October and November 2015 data and found "no evidence of systematic seasonality between February and October or November in the share of workers who are self-employed."