Usually it’s the scammer probing to see if the charge will go through before hitting it with ever increasing amounts until someone or something flags it. Sometimes it’s made out to be some common subscription service, hidden fee, or included tip. Good that you caught it early.
Or hardly working given how backwards and out of date the work culture is, but sure let’s make this out to be the fault of employees who are likely overworking due to low pay. An extra day off isn’t going to fix the systemic cultural issues, class discrimination, xenophobia… the list could go on and on.
Calling this innovative when Japan has yet to modernize its business practices, or admitting it’s an issue, is disingenuous at best.