Technically the work week is the same, not factoring in commutes. Folks who work in Tokyo often live in neighboring cities like Saitama and commute in.
There’s typically a lot of unpaid overtime though. There is the concept of “black companies” that force employees to work up to 100 hours a week. To some degree the government has been trying to crack down on it, and has met with some success, especially with the bigger international. My company is the Japanese branch of a US company, so we are a little better than most, but some of that still happens. I probably work about 45-50 hours a week on the clock on average, plus maybe 2-3 off the clock. I don’t live or work in Tokyo anymore, so my commute is fairly insignificant.
Thankfully the “you have to go out drinking with all of your coworkers after work” thing has mostly fallen by the wayside. Those events still happen, but it is way more acceptable to just…not go.
Source: I have worked in Japan my entire adult life
Japanese permanent resident here.
Epidurals are very rare. They exist but they are not popular at all. Some is the belief that a “natural” birth is better. In some cases it is just availability of an anesthiaologist that is equipped to do one. Some people just don’t even realise it is an option. The only people I know here who have had one were non-Japanese residents.
I don’t think people necessarily look down on a mother who has one, it’s rare enough that nobody would even ask probably, but it’s just not a common procedure.