You're implying that:
- only women will take care of kids
- daycare is as expensive as in your place of origin. (in Tokyo there are public daycare schools, and you have preference for entering if both parents work)
Also, once you're in, you'll have to pick the kid before 6pm in most daycares which means you must leave the office at 5pm and since a lot of companies do not have flex time, that single hour will push you to a part-time position. Then the daycare will refuse to take your child if they have a fever of 36.8℃ and do regular temperature checks during the day and force you to drop your work and come pick the child straight away if they go above 36.8℃.
Unless you work close to home and have a very flexible and comprehending employer (or have grand parents close by and ready to help), even with a lucky spot in daycare it is extremely complicated to continue working.
Let's not even talk about elementary school where mandatory partake in time-consuming useless PTA activities basically assumes one of the parent does not work.
The temperature elevation that is considered "abnormal" depends upon the age of the child and the site of measurement. The temperature elevation that may prompt clinical investigation for infection depends upon the age of the child and the clinical circumstances (eg, immune deficiency, sickle cell disease, ill-appearance, etc); in most scenarios, the height of the fever is less important than other signs of serious illness (eg, irritability, meningismus) [35-38].
●In the otherwise healthy neonate (0 to 28 to 30 days of age) and young infant (one to three months of age), fever of concern generally is defined by rectal temperature ≥38.0°C (100.4°F). (See "Febrile infant (younger than 90 days of age): Definition of fever", section on 'Definition of fever'.)
●In children 3 to 36 months, fever generally is defined by rectal temperatures ranging from ≥38.0 to 39.0°C (100.4 to 102.2°F) and fever of concern by rectal temperatures ≥39.0°C (102.2°F) if there is no focus of infection on examination. (See "Fever without a source in children 3 to 36 months of age", section on 'Fever of concern'.)
●In older children and adults, fever may be defined by oral temperatures ranging from ≥37.8 to 39.4°C (100.0 to 103.0°F) and fever of concern by oral temperatures ≥39.5°C (103.1°F).
Oral thermometers average one half of a degree Celsius lower than rectal.
The above is pretty much straight out of UTD, as I am far too lazy to retype it for anyone’s benefit.
https://www.nhs.uk/conditions/pregnancy-and-baby/how-to-take... says:
> A normal temperature in babies and children is about 36.4C (97.5F)