When Can My Child Go Back to Daycare? (Japan Sick Rules)

Why Children Get Sent Home

Japanese daycare and kindergarten staff take temperatures during the day and watch for symptoms, and they will call you to come and pick up a child who is unwell. Most facilities work to a fever line — commonly 37.5°C (99.5°F), though the exact figure and how it is applied are set locally — and they also send children home for repeated vomiting or diarrhea, an unexplained rash, eye discharge, or simply a child who cannot join in.

This can feel strict if you have come from a system with a higher threshold. The reasoning is that a group of small children shares everything, several of them are too young to wash their own hands, and one infection moves through a room quickly. It is not a judgment on your parenting, and it is not negotiable at the door.

What matters practically is knowing the rules before you need them, because the rules split into two very different kinds.

Illnesses With a Legal Exclusion Period

For a set list of infectious diseases, the exclusion period is written into national law: the School Health and Safety Act Enforcement Regulations (学校保健安全法施行規則), articles 18 and 19. It applies to kindergartens and, in practice, to daycare too. Your facility cannot shorten these, and explaining that you have a deadline at work will not change them. The one flexibility the regulation allows is medical, not parental: it includes a proviso that a doctor who judges a child to be no longer infectious can clear them before the standard period runs out. That call belongs to the doctor, and in practice it is used sparingly — but it is why the final word on a return date always comes from the clinic, in both directions.

Summarized from the School Health and Safety Act Enforcement Regulations (学校保健安全法施行規則, articles 18–19). These are the standard periods: a doctor may keep a child home longer, or, under the regulation's proviso, clear a child sooner if they judge there is no risk of passing the illness on. Not a complete list — ask your facility or clinic about anything not shown here.

The influenza row is the one worth reading twice. Preschool children need three fever-free days, not two — the law sets a longer period for this age group than for school children. Parents with children at both a daycare and an elementary school are regularly caught out by this.

Illnesses Judged on Symptoms

Most of what actually goes around a daycare is not on that legal list. Hand, foot and mouth disease, the winter stomach bugs, RSV, and the common run of colds have no fixed number of days attached. Instead, the Children and Families Agency's guidelines on infection control in childcare (こども家庭庁「保育所における感染症対策ガイドライン」) describe the condition a child should be in before returning, and the facility applies it.

Hand, foot and mouth disease is the clearest example, and a useful one to understand because the intuitive answer is wrong. The guidance is that a child can return once the fever has gone, the mouth blisters no longer interfere with eating, and they are eating normally again. Remaining spots on the hands or feet are not by themselves a reason to stay home, and neither is the fact that the virus can still be shed for weeks afterward — keeping children home for that would mean keeping them home for a month, with little effect on spread. Our guide to hand, foot and mouth disease covers the illness itself.

For stomach bugs the practical test is similar: the vomiting and diarrhea have stopped, the child is drinking and eating, and their energy is back. Facilities are cautious here because these spread ferociously in a room of children in diapers.

Because these are judgment calls rather than fixed periods, this is where facilities genuinely differ, and where asking your own facility beats reading a general answer, including this one.

Do You Need a Form?

Start with the part most guides leave out: a form is not always needed. The Children and Families Agency guidelines are explicit that these documents should not be demanded across the board — whether one is asked for, and for which illnesses, is settled between each facility and local doctors, with the burden on the child and on clinics taken into account. Plenty of ordinary colds and stomach upsets need nothing more than telling the staff your child is better.

When something in writing is asked for, it will be one of two documents, and they are not interchangeable. Knowing which one your facility wants saves a clinic trip you did not need to make.

Which document applies to which illness is set locally, not nationally, and the forms are usually downloadable from the city website or handed out by the facility. The practical move is to ask the facility which form, if any, they need — ideally before you are ever ill, and certainly before you pay a clinic to write one. If a doctor's form is needed, ask for it while you are still at the appointment rather than going back a second time, and keep a printed copy of both forms at home, because you will not want to be hunting for a download at seven in the morning.

Deciding on the Morning

The everyday version of this problem is not a diagnosed illness but a child who is a bit off. A useful way to think about it: a facility is asking whether your child can get through a normal day (eat, sleep, play outside, cope with a group), not whether they are technically well.

Report an absence the way your facility asks, by phone or app, and by their cutoff time. Say what the symptoms are and when they started; if a doctor has diagnosed something, say what. This matters beyond politeness — facilities track what is going around, and your call is how they notice an outbreak building.

When Both Parents Work

The first year in group care is, for most families, a run of illnesses — and the exclusion periods mean each one can cost several days, not one. This is the part that breaks work plans, so it is worth arranging before it happens rather than during.

Three things help. Find out now whether your area has 病児保育 (byōji hoiku), sick-child care run by clinics or dedicated rooms. It usually requires registering in advance and a doctor's form, and the places go quickly, so registration is a thing to do while everyone is healthy. Register a backup adult with the facility, since most will only release a child to someone already on the list. And agree with your partner in advance how you will split the days, because the decision is much harder at 7am with a feverish child.

Our guide to getting ready for daycare covers what else to set up before the first day, and the daily notebook explains how the daily health reporting works.

Japanese Vocabulary

The words that appear on facility notices and clinic forms: