Japan’s Prime Minister Sanae Takaichi meant it as proof of dedication. On Marine Day — a national holiday — she posted on X that she had managed five hours of sleep “for the first time in a while,” adding:

“Since taking office, getting zero to three hours of sleep has become the norm.”
— PM Sanae Takaichi, on X

In most countries that reads as a humblebrag. In Japan — the country that had to invent a word for death by overwork — it detonated a national argument.

Why It Hit a Nerve: Karoshi

Karoshi (過労死) literally means “death from overwork” — fatal heart attacks, strokes and suicides tied to extreme hours. It is recognized enough as a social crisis that Tokyo’s government has been pushing a four-day workweek to force better work-life balance.

So the optics were stark: while the capital tries to convince companies to let people work less, the head of government celebrated running the country on almost no sleep. Critics said it glorifies exactly the culture the reforms are trying to bury. Time framed it as a nationwide debate about work-life balance itself.

She Has Said This Before

  • On winning her party’s leadership in October, she declared she would “abandon the phrase ‘work-life balance’” and “work, work, work, work and keep on working.”
  • Reports say she has summoned aides to meetings as early as 3am.
  • Before politics she was, famously, a heavy-metal drummer — the intensity is not new.

The Timing Made It Worse

The post landed just as a Mainichi Shimbun poll showed her Cabinet’s approval at 41% and disapproval at 44% — the first time disapproval has topped approval since she took office. A flex about sleepless dedication reads differently when the public is souring on the results of all that work.

What Sleep Science Actually Says About 0-3 Hours

Short version: it is not sustainable for almost anyone. Health authorities including the CDC recommend at least seven hours a night for adults. Chronic short sleep is linked to heart disease, weakened immunity, and — most relevant for a head of government — impaired judgment and decision-making. A tiny number of people carry rare “short sleeper” gene variants and genuinely function on very little; for everyone else, running on 0-3 hours is running on borrowed time.

Frequently Asked Questions (FAQ)

How much sleep does Japan’s PM say she gets?

Zero to three hours a night as “the norm” since taking office — with five hours a rare exception, per her own X post.

What is karoshi?

Japan’s term for death by overwork — fatal heart attacks, strokes or suicide linked to extreme hours.

Why the backlash?

The contrast with Tokyo’s 4-day workweek push against overwork culture — and a poll showing her disapproval above approval for the first time.

What did she say about work-life balance?

That she would abandon the phrase and “work, work, work, work and keep on working.”

Is 3 hours of sleep enough?

No — adults need 7+ hours per the CDC; chronic short sleep impairs health and judgment, barring rare genetic short-sleepers.

Quotes and poll figures per Time, Yahoo News, Tokyo Weekender and Mainichi Shimbun reporting, July 2026. Photo: official portrait of Prime Minister Sanae Takaichi, Government of Japan (MOFA), CC BY 4.0, via Wikimedia Commons.