Independent work: choice, necessity, and the gig economy

2. DATA SOURCES FOR SIZING THE INDEPENDENT WORKFORCE 
We sized the independent workforce in two ways: first, through triangulating existing 
government data and external research, and second, by conducting our own survey. In the 
United States, we used a combination of government statistics and private research studies 
and surveys. In Europe, official data were available at the country level, but there is little 
external research on the size of the independent workforce. 

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McKinsey Global Institute
Independent work: Choice, necessity, and the gig economy