15/10/2026
Where does "80% of jobs are never advertised" come from?
You have read it a hundred times. We went looking.
The trail we could follow, as described by Jesse Preston [TAG] in "Hidden Origins of the Hidden Job Market" (a secondary source): a 1966 pilot study in Rochester, New York, funded by the Ford Foundation and run by the National Industrial Conference Board. It covered 27 companies. Of career-type hires, 18.9% were advertised in the newspaper, so about 81% were not (for all hires, 25.1% were advertised). Several large manufacturers belonged to an industry council that asked members not to advertise. In August 1966, Bernard Haldane used the 80% in an article, for jobs filled through personal recommendation.
What we did not find, in the sources we reviewed: a later study that confirms 80% as a general figure for today's market, or the original report.
Two recent surveys by US vendors point the same way, with a caveat. In April 2026, 92% of 213 fractional practitioners said they find clients through personal networks. In August 2026, 94% of 1,733 respondents said they won clients through referrals. Both describe how fractionals find clients. Neither says how many jobs are filled without an advert.
So the number may well have been true: for 27 companies, in one city, in 1966, in the newspaper. Today the direction may still be right, but the number is not proven. A figure repeated for sixty years without a check is a belief, and it still shapes how people look for work and how companies think they hire.
That is why every number we publish goes out with its source and its date. If you want the sources, write to us and we will send them. We go live in the first week of November, and we will be at MAPIC in Cannes on 3-4 November.
Which number do you repeat in meetings without having checked where it comes from?
Note: third-party figures are dated and quoted from the sources named. The two surveys come from vendors, not independent research. "Not found" means not found in the sources we reviewed.
