The iceberg of ignorance
The people who decide see the least.
Sidney Yoshida (1989), as reported by Chuck Chakrapani (1991) – original data not located
Top management
4%
General supervisors
9%
Supervisors
74%
Rank and file
100%
Waterline
The claim
As reported, workers at every level of a large factory listed the problems they knew of. Top management knew of 4 in every 100.
Why it happens – 1 of 3
Most people don’t feel heard. Only 28% of US workers strongly agree that their opinions count at work.
Gallup (2025) – 17,660 US workers
Why it happens – 2 of 3
Speaking up carries a cost. Almost half of employees who reported misconduct say they experienced retaliation.
Ethics & Compliance Initiative, Global Business Ethics Survey (2023) – 75,000+ employees, 40+ countries
Why it happens – 3 of 3
Input rarely changes decisions. Fewer than 3 in 10 UK employees say their manager is good at letting them influence final decisions.
CIPD Good Work Index (2026) – 5,074 UK employees
What it costs – inside
Decisions rest on a filtered picture. At Nokia, fearful middle managers shared less bad news, so leaders overrated their technology.
Vuori & Huy, Administrative Science Quarterly (2016)
What it costs – outside
The cost reaches the market. Nokia went from world-dominant to losing the smartphone battle between 2005 and 2010.
Vuori & Huy, Administrative Science Quarterly (2016)
What it costs – outside
Sometimes the cost is lives. Those who approved Challenger’s 1986 launch didn’t know of the O-ring problems or the engineers’ objections.
Report of the Presidential Commission on the Space Shuttle Challenger Accident (1986), ch. V
The problems are already known – by the people doing the work.
What reaches the top depends on what happens to people who speak up.
Gallup (2025); Ethics & Compliance Initiative (2023); CIPD (2026)