Kyocera split itself into tiny self-accounting amoebas so every worker felt like a CEO

Kazuo Inamori founded Kyoto Ceramics in 1959. The young company grew fast — from precision ceramics into semiconductors, solar cells and telecom components — and Inamori watched the entrepreneurial intensity that had defined the early years dissipate as layers of management accumulated. Department heads stopped thinking like owners and started protecting budgets.

Around 1963–1965 Inamori devised 'amoeba management' (アメーバ経営): splitting the company into small autonomous units of 3–50 people, each running its own micro-P&L with a single headline metric — profit per labor-hour — and trading with other amoebas at internally negotiated prices benchmarked to the external market.

Each amoeba is a self-contained micro-profit-center that plans its own monthly P&L, negotiates transfer prices with neighboring amoebas, and tracks a single metric — profit per labor-hour — visible to every member in real time. The hourly-efficiency figure replaces conventional budgets and top-down targets: each amoeba leader decides how to improve it, and because the amoeba trades at prices benchmarked to the external market, internal complacency shows up immediately as a loss.

Split the company into tiny self-accounting units, each with its own P&L and transfer prices, tracking profit per labor-hour so every worker sees their hourly impact.

The ability to split and merge amoebas means the structure evolves with the market, not with bureaucratic inertia.

Leaders who cannot develop their people get their amoeba split — creating natural selection for leadership quality.

If your organization has grown too big for people to feel ownership, break it into the smallest units that can run their own P&L and make their internal transactions visible. Each unit should be small

Kyocera reported profits for over 50 consecutive years; Inamori later applied the same system at Japan Airlines after its 2010 bankruptcy. Inamori's amoeba system became one of the most studied Japanese management innovations. Hundreds of Japanese firms adopted variants; Huawei and Haier in China implemented micro-P&L structures inspired by amoeba thinking. Inamori's own books — including Amoeba Management (2012, Taylor & Francis) — have been translated widely. The JAL turnaround is cited as proof the mechanism transfers beyond its origin.