"The labor economists Lawrence F. Katz of Harvard and Alan B. Krueger of Princeton found that the percentage of workers in “alternative work arrangements” — including working for temporary help agencies, as independent contractors, for contract firms or on-call — was 15.8 percent in the fall of 2015, up from 10.1 percent a decade earlier. (Only 0.5 percent of all workers did so through “online intermediaries,” and most of those appear to have been Uber drivers.)...
"...This change in behavior has profound implications on social insurance. More so than in many advanced countries, employers in the United States carry a lot of the burden of protecting their workers from the things that can go wrong in life. They frequently provide health insurance, and paid medical leave for employees who become ill.
They pay for workers’ compensation insurance for people who are injured on the job, and unemployment insurance benefits for those who are laid off. They help fund their workers’ existence after retirement, at one time through pensions, now more commonly through 401(k) plans.
"...When people working as a team need extensive experience working together, it can be tricky to contract out the work. But when there are clear, simple measurements of how successful each person is, and a company can monitor it, the employer now has flexibility.
“New technologies may allow some things to be shipped out and standardized and easily monitored,” Mr. Katz said. “Call center workers can be at home. Independent truck drivers can be monitored for the efficiency of their routes. Monitoring makes contracting more feasible.”
-Neil Irwin, Job Growth in the Last Decade Was Temp and Contract, NY Times