Chapter 1 Halachos 5, 6

Halacha 5: Not only is one not allowed to speak lashon hara voluntarily but even if someone is trying to coerce another to speak slanderously about someone else, it doesn’t matter if it is your parents, rabbi, or even the king you cannot tell them any lashon hara about someone else unless it is for a constructive purpose and all the parameters mentioned later on are met. Lashon hara is like any other mitzva, Torah or rabbinic which one cannot listen to parents or even a rabbi if they say to transgress and must even stop them from transgressing if one sees any of them doing a sin.

 Halacha 6: If it means one has to lose money, whether losing a chance of a promotion or even a demotion or even losing one’s job, and even if it means the means of one’s livelihood and supporting a family is in danger one still must not speak lashon hara and be ready to look like a fool in the eyes of one’s boss and fellow employees. Lashon hara is like any other mitzva that one must be ready to sacrifice all his money and not transgress, whether on a Torah level or rabbinic.  

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