Five Iron Rules for Bringing Family into the Family Business

The scene repeats itself across Chinese family businesses. A father spends thirty years building a company of real scale. His son graduates from university abroad, flies home, and reports for work the next morning. The father has already had a word with human resources: a window office, a vice president’s title. From that day forward, everyone in the building, from the board directors down to the secretaries, greets the young man with a respectful “junior boss.”

It feels like the natural order of things. The father conquered the territory; the child inherits it. What is there to discuss?

But after thirty family histories, another picture comes into view.

The Mogi family, who have brewed Kikkoman soy sauce for more than three centuries, sent their own children to work two years as ordinary clerks at the Bank of Tokyo, then parked them in non-management jobs inside the family company for nine more. Forrest Mars, the second generation at Mars, issued time cards to every member of the family and docked ten percent of a day’s pay for a single late arrival. Robert Bosch wrote into his will a provision giving seven non-family executors final veto power over his own son. Thomas Kirk Kristiansen of LEGO began preparing for succession at twenty-five; by the day he actually took the chair of the family holding company, he was forty-four.

These families have all lived a long time. LEGO, the youngest, is approaching its centenary. Mars is past a hundred and ten. The Rockefellers are at a hundred and sixty. Kikkoman is at three hundred and sixty.

And they share one trait. When it comes to letting their own people into their own company, they set the bar higher than for any outsider.

Rule one: three to five years on the outside first

Tokyo, 1962. A twenty-four-year-old was formally adopted into the Shichizaemon branch of the Mogi family through the Japanese institution of mukoyoshi, the adopted son-in-law. In most family businesses, he would have reported to Kikkoman the next morning.

That is not how the Mogi family does things.

His name was Kenzaburo Mogi. The family first sent him to the Bank of Tokyo, where he worked two full years as an ordinary employee. When those two years were up, he entered Kikkoman — and spent nine years in non-management roles. Only then did the family send him to Harvard for an MBA.

Osamu Mogi, who today runs Kikkoman’s international business, spent three years as an auditor at PwC in Chicago before he joined the family firm.

Two years or three — the length is not really the point. The point is the rule itself: until you have been judged, rejected, and worn down by strangers, you do not set foot in the family company.

The Mogi family has explained its own reasoning. Inside a family business, your surname decides how people treat you. When a young Mogi walks into a conference room, everyone from the office administrators to the department heads rises to their feet. In that air, almost the only thing he will ever hear is praise. A twenty-something who marinates in praise long enough loses the ability to weigh himself. Send him outside — let a PwC partner be disappointed in him a few times, let a Bank of Tokyo client turn him down to his face — and his self-estimate settles back to where it belongs.

The outside world also gives him a second pair of eyes. People raised inside a family company are formed by a single culture, and their angle of vision is naturally narrow. Someone who has spent years elsewhere comes back and notices strange things — things no one inside the family ever thought to question. Those strange discoveries are, again and again, where a family firm’s self-renewal begins.

Written as a governance clause, it reads roughly like this:

A family member who wishes to work in the family business must first complete at least three years of employment outside the family’s holdings, with written performance evaluations from non-family employers.

Rule two: once inside, start at the bottom

A Mars chocolate factory, sometime in the 1980s.

On the production line stands a trainee in white overalls and a hairnet, carefully inspecting each candy as it comes off the line. Her coworkers are not entirely sure of her last name.

She is Victoria Mars — Yale graduate, third generation of the family, and one day the chairman of the Mars board. But on this day in the 1980s, her job is quality-control trainee.

Her sister Pamela’s first job at Mars was operations supervisor at a plant.

Their father, Forrest Mars, set even more detailed requirements for his two sons: a Yale degree, then an MBA; school holidays spent working on the family farm; after graduation, a start at the bottom of the company — with no step skipped.

When Forrest took charge in 1964, he did something that left employees staring. He issued a punch card to every person in the company. Every person — including every member of the Mars family. From then on, the Marses clocked in and out like everyone else. Arrive late once, and you lost ten percent of that day’s pay. Family members who were late lost it too.

It looks like a ceremonial detail. It is the rule itself. When the family punches the same clock as everyone else, the whole company watches — and every employee understands, in his bones, that in this company the rules are real and hold for everyone.

The shop floor is the only place where a future successor can develop a feel — a literal, physical feel — for the production line, the supply chain, the customer, the frontline worker. That feel cannot be learned from business-school cases or executive postmortems. A successor who has never stood on the line will never know how many steps a piece of candy passes through between raw material and shipping dock, or what the worker at each step is thinking. When he finally sits in the decision-maker’s chair, every decision he makes will be made through a fog.

Godtfred Kirk Christiansen, LEGO’s second generation, was helping in his father’s workshop every other day from the age of twelve. The greatest transformation he later brought to LEGO was the invention of the interlocking plastic brick. Only someone raised in the workshop could have invented it — because only such a person knows, in his hands, what it feels like when two pieces snap together perfectly.

A family member’s first position in the family business must be a frontline role — production, sales, customer service, or support — held for no less than two years, with no mid-course transfer into management and no authority beyond that of non-family employees in the same role.

Rule three: divorce the paycheck from the surname

Every morning, out of the subway exit at 50th Street in New York came a man in a hat. He crossed with the crowd of commuters, walked two blocks, and entered the headquarters of Chase.

The man was David Rockefeller, and he ran the bank. From the day he joined in 1946 to his retirement in 1981, this was his commute, nearly every day. His family kept an entire private office suite high in Rockefeller Center — the storied Room 5600. But he rode the subway to work.

It looks like a personal habit. But every employee who saw David Rockefeller emerge from that subway exit received a concrete answer to a question that matters enormously inside any company: what does the boss’s son act like around here?

Robert Bosch put the same idea in its cleanest form, in his will: no privileges shall be granted to his descendants merely because they are descendants of Bosch. That single sentence became one of the core governance principles of the Bosch group.

A family member’s sense of privilege is the fastest acid there is for corroding a company’s culture. Let employees watch the boss’s son roll in late in a luxury car and go unfined, sign expense reports no one audits, keep a reserved table in the company canteen — and discipline begins dissolving from the very top. The people below will not say it aloud, but they will reach a conclusion: this company has two rulebooks, one posted on the wall and one applied to the owner’s family.

Once that conclusion forms, every commitment an employee makes to the company gets silently discounted.

A family member’s compensation, evaluation, discipline, and promotion path must be identical to those of non-family employees in the same role. Any privileged arrangement — a dedicated office, a dedicated car, extra expense allowances, special approval authority — requires the consent of a majority of the board’s non-family members.

Rule four: succession is a decade-long process, taken in stages

Billund, Denmark, May 2023. Kjeld Kirk Kristiansen handed the chairmanship of KIRKBI, the family holding company, to his forty-four-year-old son, Thomas.

The father chose the date deliberately. It fell exactly fifty years after the day Kjeld himself had joined LEGO’s management. Two dates, half a century apart, clasped together.

But that moment was not a beginning. It was an endpoint.

From the day Thomas first entered the LEGO boardroom at twenty-five to the day he received the chairman’s seal at forty-four, nineteen years passed. He climbed five steps.

The first came in 2004: at twenty-five, he joined the board of the LEGO Group — as an observer. He did not vote. He did not speak. He sat, listened, and watched. Three years later, in 2007, he became a full director, with a voice. Nine years after that, in 2016, he took the chair of the LEGO Foundation — his first independent command of an institution. In 2020 he became chairman of the LEGO Group’s board. Three more years, and in May 2023 he took over KIRKBI.

Each step lasted three to nine years. Each step carried a little more power than the one before. And each step gave him enough time, in that seat, to make mistakes, correct them, and be assessed by people outside the family.

What this arrangement does is stretch succession from a moment into a process. At any node along the way, if the heir proves unequal to it, there is still time to stop. And if he goes the distance, what emerges at the end is not a title. It is a person who has been ground and polished for nineteen years.

Thomas’s grandfather Godtfred trained his own son, Kjeld, on the same logic. He sent Kjeld first to LEGO’s Swiss subsidiary, where he spent five years in technical roles, developing hot-runner mold systems for the bricks. Then came an MBA at IMD in Lausanne. Kjeld became LEGO’s chief executive at thirty-two.

LEGO’s way of succession is not one generation’s invention. It is how each generation trains the next.

For the counterexample — succession without stages — consider Cheng Yu-tung of Chow Tai Fook. Cheng held power for sixty-six years, until a stroke at eighty-seven finally forced the handover. His son Henry Cheng had been rushed into the job in 1989 with no gradual transfer of power at all. Within fourteen months, New World Development poured seven billion Hong Kong dollars into acquisitions, squeezed its own cash flow to the edge, and forced Cheng Yu-tung out of retirement a second time to steady the ship.

A founder who spends half a century withholding real seasoning from the second generation ends by producing a successor with no transition. That was not Henry Cheng’s personal failure. It was a structural one.

Succession must proceed in stages — observer, then director, then division head, then subsidiary head, then group deputy, then group head — with a minimum of three years at each stage. No stage may be skipped by any candidate who has not passed evaluation by a committee of non-family assessors.

Rule five: give non-family members the final veto over family heirs

Robert Bosch spent seven years writing his will. From the first draft in 1935 to the final version, dated May 31, 1938, he went through six drafts — and wrote three companion sets of guidelines for the men who would execute it.

In the will he named the seven people he trusted most as executors. His private secretary, Hans Walz, was designated the final interpreter: any dispute over the will’s execution would be settled by Walz’s reading of it.

The force of this design was proven on Bosch’s own son.

Robert Bosch Jr. was the founder’s son by his second wife, Margarete. He was fourteen when his father died. When he grew up and sought a role in running the company, his record managing a subsidiary was poor — and the team of seven executors eased him out of the decision-making level.

The founder had written his son heartfelt letters about carrying on the work. The son was then vetoed by the very men his father had appointed.

It sounds cruel. It is precisely the genius of the Bosch will. Bosch had written one line in it that governs all the rest: the company matters more than the family.

The modern echo of that rule can be found at LEGO. In 2023 the family created a new foundation called K2. It holds just 1.5 percent of the equity — and 34 percent of the voting rights. It exists for exactly one purpose: if the family ever falls into serious internal conflict, K2 can cast its votes to keep the quarrel from threatening the company.

In ordinary times it sits in silence. At the critical moment it can cut the circuit on its own. It is a fuse installed beneath the whole structure.

People are permanently overoptimistic about their own children. A father finds it nearly impossible to say of his son, “He is not good enough.” A mother finds it harder still. Every emotional current inside a family pushes everyone toward the same sentence: our child is the best. That collective blindness cannot be broken by any force inside the family.

Which is why someone must be brought in from outside the emotional field — someone carrying institutional authority — to render the judgment the parents cannot bring themselves to pronounce.

Appointing a family member as CEO or to any core executive post requires the consent of a majority of independent directors or an external evaluation committee. That body must hold the power to veto any family appointment on the basis of a written competence assessment, regardless of the candidate’s seniority within the family. A vetoed appointment may be resubmitted only after a development period of at least one year.

From the corner chair to the center of the table

Thomas Kirk Kristiansen was twenty-five the first time he walked into the LEGO boardroom.

The room was large; a dozen or more people sat at the long table in the middle. He was shown to a chair far from it. The meeting ran more than three hours. He cast no vote and spoke no word.

When it ended and the others filed out, he stayed in that chair a while longer.

Nineteen years later, he sat at the very center of the main table.

This stretch of LEGO family history was later recorded in words like “exceptionally thorough and prudent.” But thoroughness and prudence come down, in the end, to a single fact: from the chair in the corner to the center of the table, he took nineteen years.

That is what these five rules are for. None of them tries to shorten the nineteen years. They exist to guarantee that whatever is supposed to happen in those years actually happens.

Let the person who will one day carry the family’s weight be graded, at every stage of the road, by the world outside. Let strangers scold him. Let the market refuse him. Let non-family directors ask him the hard questions. Let the workers on the line see through whatever in him is hollow.

A person who has walked nineteen years that way can finally sit down at the center of the table — and the seat will hold.