In the 1980s, as Ricardo Semler has told it, Semco gave every new father two weeks of paid paternity leave. The number of fathers who took it was zero. Not because the benefit was unwanted, but because each one privately ran the same calculation: what will the boss think? Semler drew from this a rule he has repeated for decades: a benefit nobody dares use is not a benefit, it is decoration. The modern reader will recognize the genre immediately. The unlimited vacation policy, generous on paper and ambiguous in exactly the way that keeps its users guessing what the boss will think, is the paternity leave of the present day: an offer whose vagueness quietly transfers the risk of using it onto the person who dares.
Semco's eventual answer was the opposite of generosity. It was compulsion: thirty days of vacation, taken, away, laptop locked. What the policy surfaced, in Semler's telling, was stranger than resistance. Grown adults negotiated to be allowed to work more, and he refused to read this as devotion. It was not loyalty, he has said; it was fear, and he called that fear the cheapest management tool ever invented. No manager has to demand overwork in a system where everyone can see who rested and promotions are decided by people keeping score.
Rest is a coordination problem
The standard framing treats rest as self-care, a personal skill that some people lack. The framing is convenient for institutions and wrong about the mechanism. Inside any organization where visibility is currency, rest is an arms race in reverse: each individual's rational move is to rest slightly less than the colleague against whom they are implicitly measured, and the equilibrium of all those rational moves is collective exhaustion that no participant chose. Willpower cannot fix an equilibrium. The employee who unilaterally disarms, who actually takes the four weeks, actually silences the phone, pays a visible price in a game everyone else is still playing. This is why exhortation, wellness apps and executive emails about recharging accomplish nothing: they address individuals, and the problem lives between them.
Coordination problems have exactly one class of solution: rules that bind everyone at once. Compulsory vacation is not paternalism, any more than a speed limit is; it is the removal of a competition. When absence is mandatory and universal, resting stops carrying information. Nobody's thirty days can signal weak commitment, because everybody's thirty days are identical and non-negotiable. The rule does not restrict freedom so much as restore it: the freedom to rest without paying a signaling tax existed for no one until the rule created it for everyone. The locked laptop matters for the same reason. A vacation with email is not a vacation with a small leak; it re-opens the signaling channel the rule existed to close, and one answered message re-enrolls the entire team in the race.
The bill for voluntary rest
The cost of leaving rest to individual heroism is no longer hypothetical. In Brazil, official social-security data compiled by the national occupational-medicine association show work leaves for mental disorders climbing from 219,850 in 2023 to 367,909 in 2024, and to 393,670 by November 2025, with recorded burnout leaves roughly tripling over the period, from 1,760 to 6,985. Administrative data of this kind undercounts by construction, capturing only collapses severe enough to formalize, more than fifteen days, with paperwork. These are the failures of a system that treats recovery as a private responsibility, priced and delivered as public expense.
And the physiology, unlike the policy, is well mapped. The largest trial of working-time reduction to date, published in Nature Human Behaviour in 2025, found that its well-being gains flowed through three measured channels: improved work ability, fewer sleep problems, less fatigue. Rest works through the body's oldest infrastructure. The only open question was never whether humans need enforced recovery; it was whether institutions would enforce it before the body does. The body, the Brazilian numbers show, enforces it retroactively, with interest.
The rule as a gift
There is a final asymmetry worth naming. Decoration benefits, the untaken leave, the unlimited PTO, transfer risk downward: the institution collects the reputational credit, the employee inherits the impossible judgment call. A rule transfers the risk back up. When vacation is compulsory, the organization must actually build for absence, coverage, documentation, deputies, rather than renting the appearance of a policy while the workforce quietly declines to use it.
That is the test that separates real rest from its simulation, and it fits in one question: what happens to the person who complies? Where rest needs courage, the policy is decoration. Where it needs nothing, because the rule has already spent the courage on everyone's behalf, an organization has finally made rest what it always was: not a reward, not a signal, but maintenance.
Sources
- ANAMT / INSS administrative data (2026). Levantamento sobre afastamentos por saúde mental 2023-2025. Official Brazilian social-security data: work leaves for mental disorders rose from 219,850 (2023) to 367,909 (2024) and 393,670 (through November 2025); recorded burnout leaves roughly tripled, from 1,760 to 6,985. https://www.anamt.org.br/portal/2026/01/27/levantamento-anamt-com-dados-oficiais-do-inss-revela-crescimento-dos-afastamentos-decorrentes-de-problemas-de-saude-mental-entre-2023-e-2025/
- Nature Human Behaviour / Fan, Schor, Kelly & Gu (2025). Work time reduction via a four-day workweek. In the largest four-day-week trial (2,896 employees, 141 organizations, 6 countries), reduced hours improved well-being through three measured mechanisms: improved work ability, fewer sleep problems and reduced fatigue. https://www.nature.com/articles/s41562-025-02259-6