How do you want to change thinking towards those problems of a whole nation? It's not like "it's the company doing it" - it's japanese people doing this to their own people. So this would be were to start.

.. uprising workers are needed here. New thinking towards well-being of employees must be adapted. Without a social overthrow, I think, it's impossible to change such system.

Or, you found an company yourself and do it differently, addressing the very each problems and market yourself, so that everyone is fighting to be with your company and you as the boss.

So you see, it's near to impossible. One can't wish for uprising, as it won't be happening. One can't wish for change of the Japanese society. It won't be happening as long traditional thinking is still state of the art.

May be in 30y when there's a new generation of managers who think like you and are keen to to different.

Good luck my friend from Japan! Greetings from Germany.

In case you really want to know and still didn't Google it:

On Germany/Europe, we have strong laws for employees. That's a big part of the working culture over here, as each of the employees know about and have the chance to exercise his/her rights given by law. For example , the working day is defined as 8h + 30mins of break. If you're about to work longer, then you get better money/compensation for it. There's a strong law for recreational times/vacation, where each one oughta get min. 24d of payed off-time. There are laws saving employees from mobbing, and if it happens, it's easy to sue because of the employees rights. And so on...

So, urge your legislation to pass such laws as a start. With the time, everyone gets accommodated to this and everything will change for the good.

Wish you success.