Man I know this abused worker trope is used all the time in manga settings but tbh I don't blame them for using it all the time since it happens daily to a lot of young workers in Japan. It's not like in the US or elsewhere you have the ability to take legal action and not get silenced or fight...
damn i kinda get how it sucks if the work culture is with drinking on company dinner nights. Can't deny a drink from a supervisor coming onto you or else they'll harass you at work :\