King Sejong's Leadership Lessons: How to Lead Change by Listening

Who was King Sejong, and what happened in his 1430 tax consultation?

Sejong was the fourth king of the Joseon dynasty in Korea. He was born in 1397, came to the throne in 1418 when his father Taejong stepped aside (some reference works date the reign from 1419), and ruled until his death in 1450. His reign is best known for the Korean alphabet, now called Hangul, which was completed in 1443 and promulgated in 1446 in a short book called the Hunminjeongeum.

It was also a reign of practical reform: a research and advisory body known as the Hall of Worthies, rain gauges and water clocks, books on farming and medicine, and a land-tax reform shaped by an unusually broad consultation. Much of what we know comes from the Annals of the Joseon Dynasty, the court's own record, which UNESCO inscribed on its Memory of the World Register in 1997.

Leaders study Sejong not because he was flawless but because his reign shows a repeatable pattern for change: ask widely, read the differences, refine, test where it fits, then roll out in stages. That pattern travels well into any organisation facing a decision that affects many people.

Sejong's government proposed a new land tax and, rather than simply announcing it, gathered opinions across the kingdom. Accounts drawn from the Annals put the number consulted at roughly 172,800 people over roughly four to five months, from senior officials to ordinary farmers. Reported totals are about 98,000 in favour and 74,000 against.

The regional figures matter more than the total. Published research on the Annals (Park Hyun-mo, The Review of Korean Studies, 2005) reports Gyeongsang province in the fertile south at 36,262 for and 377 against, and Pyeongan province in the colder north at 1,326 for and 28,474 against. A flat tax per area of land was light where harvests were rich and heavy where they were poor.

Sejong did not impose the national majority. Over the following years the proposal was argued over and reworked so that land was graded by fertility and the tax adjusted for the harvest. It was tried first in southern provinces, settled in 1444, and extended province by province until the late 1480s; sources differ slightly on exact dates and figures, so treat these as reported ranges. A 2005 study in The Review of Korean Studies describes the whole reform as a deliberative process lasting seventeen years.

What are King Sejong's leadership lessons for managers today?

Six habits come out of the reign. Each is simple to state and hard to keep without a routine, which is why we pair each with a tool.

How do you listen at scale without it becoming theatre?

Most consultations fail before the first question is sent. The fix is to make seven decisions first: the decision and who owns it; what is already decided and what is genuinely open; everyone affected, including people not in the room; which segments you will read separately; the method, matched to the people (a paper form or a break-room QR code reaches staff without laptops); a handful of neutral, plain questions; and the date you will report back.

Then track responses by segment, not just overall. A 45% response rate can hide a night shift at 12%. Set a minimum per segment and add a second route for any group below it.

• Say what is open and closed in the first lines of the invitation.
• Check every question: one topic, neutral wording, plain words, answerable by all.
• Promise anonymity only if you can deliver it, and never report groups small enough to identify people.
• Put the report-back date in the invitation.

Why should you read survey results by segment?

Because an average can hide two different worlds, as it did in 1430. Enter counts for each group (for, against, unsure), compare each group's share in favour with the overall share, and look hard at any gap wider than about 15 points. Check the base too: eighty per cent of five people is a conversation, not a mandate.

When you find a split, read that group's reasons in their own words before forming a theory. Then choose openly between four options: change the proposal for everyone, tailor it for the split group, phase it so that group goes last with extra support, or proceed and explain why.

What does 'you said, we did' have to do with Sejong?

Joseon kings kept formal channels for grievances, and the court kept detailed records. Homer Hulbert's 1905 History of Korea, describing a petition channel set up by Sejong's father, adds a warning every manager should hear: "This privilege was seldom abused for it soon became known that if a man did not have right clearly on his side his rash appeal to the king brought severe punishment." A channel that punishes the people who use it goes quiet, and leaders mistake the quiet for contentment.

The modern discipline is the decision record and the you-said-we-did note: what we asked and who answered, what we heard, what we decided and who decided, what we changed because of it, what we did not change and why, and who tells whom by when. Send it on the date you promised, through the same channels you used to ask.

How do you pilot and phase a change the Sejong way?

Hulbert credits Sejong's father with a principle the son's tax reform followed: "He was wise enough not to force all these radical reforms at once, but spread them over a period of nearly two decades." In a modern organisation that means a pilot with a written hypothesis, typical sites plus at least one hard one, measures with baselines, a success rule and a stop rule agreed before you start, and a monthly review that ends in go, refine or stop.

The value is in the refining. Sejong's flat tax became a graded one because the years of argument and trial exposed what the first draft missed. Phase the rollout with support and a decision point between each stage, and let later phases hear from earlier ones.

What is the Hangul test for plain language?

Before Hangul, writing in Korea depended on Chinese characters that took years to learn. Hulbert puts the problem directly: "He was not the first one to see the vast disadvantage under which the people labored in being obliged to master the Chinese character before being able to read." The alphabet's own explanatory text, written by Sejong's scholars, describes consonants shaped after the speech organs, and its postface says readers could learn the letters without a teacher.

We turn that into a five-check test for any document: the first line says what to do; the newest person understands every word; each paragraph does one job; it works on a phone, with a screen reader and in a second language; and a real reader can say back what it asks. Plain language keeps legal duties, safety limits and deadlines. It puts the action first and the detail behind it.

What should leaders not copy from Sejong?

Sejong ruled a hereditary monarchy with a rigid class system that included the nobi, people held in hereditary servitude. His 1430 consultation informed a royal decision; it was not a democratic vote, and many people were not asked. His reign also included frontier wars and restrictions on Buddhism.

The story of the engineer Jang Yeong-sil shows both sides. Born a government-owned nobi, he was brought to court for his skill and given an official post, and is credited with water clocks and astronomical instruments in the 1430s. In 1442 a royal palanquin he was responsible for broke, and he was punished and dismissed. Promote on merit, and do not build a system that drops people at the first mistake.

Treat period sources with care as well. Hulbert, writing in 1905, thought the alphabet drew on Sanskrit; modern scholarship, and the Hunminjeongeum itself, point to the speech organs. Learn the habits; skip the hero worship.

How can you start leading by listening this week?

Start with a two-minute habit rather than a programme. Each morning, before you open email, ask one question: whose voice haven't I heard on my biggest current decision? Write one name, as specific as 'the Sunday shift lead' rather than 'front-line staff', and hear that person before the end of the day. Over a quarter that is around sixty conversations you would not otherwise have had.

Once a week, add a listening round of three twenty-minute conversations: one with someone above you, one with a peer, customer or partner team, and one with the newest or quietest person who will actually do the work. Ask what would make the change harder than it looks from where you sit, take notes, and do not defend the plan in the room.

Before you send your next important document, run the Hangul test and ask a new joiner to tell you, in their own words, what it asks them to do. And the next time results arrive with a comfortable majority, open them by segment before you celebrate. If you want a baseline first, an assessment such as AssessAll's Data-Informed Leadership can show where you start. The Sejong kit from Bodhih Training packages all of this into a 12-week programme, with a calendar, two workbooks and the forms for each step.

• Day 1: first morning voice check, before the inbox.
• Day 2: book this week's three listening conversations.
• Day 3: run the Hangul test on one document.
• Day 5: write down what you heard and one thing you changed because of it.