An absolute requirement in Japan if you are more than a few minutes late in Japan. A thirty minute delay during morning rush hour used to have train staff with a stack of papers handing them out to everyone going out of the gate kiosk. I used to get them after any delay at all on my commute.
I assume now annoying bosses can check online, but it's Japan so an old person in charge might ask for the paper slip as well just in case you overslept when you were in a nearby business hotel after a rather awful stint of over time the night before.
I assume now annoying bosses can check online, but it's Japan so an old person in charge might ask for the paper slip as well just in case you overslept when you were in a nearby business hotel after a rather awful stint of over time the night before.