Not sure if it's typically the case in Japanese custom, but there are a number of scenarios where a person forfeits certain compensation by quitting that they w

Not sure if it's typically the case in Japanese custom, but there are a number of scenarios where a person forfeits certain compensation by quitting that they would otherwise be entitled to if they're fired. So if the company can get rid of them by making them think it was their idea, the company saves on severance / recoups equity, etc.