Adding to what Kolanaki said, these kinds of abuses are unfortunately pretty commonly unreported in Japan because of social pressure against the victim.
In particular there's a practice of mentally abusing workers until they resign to avoid firing them.
Sexism and homophobia are alive and well because they're rooted in a culture of conformity to social norms which punishes those who stand out.
And I don't mean to be xenophiobic about this; it's just information I've gotten from LGBT manga authors and the news. I in no way think there's anything inherently wrong with Japanese people or that their culture is without value. I don't really trust any large corporations to begin with.