The question in question: How are salaries listed in Brazil?
If I understand it correctly, it asks whether a listed salary (using the word salário) in Brazil is normally understood to mean a monthly, yearly, weekly, or daily salary. There has been some discussion over whether or not this is on-topic on this site. Is it truly a question about Portuguese?
Clearly, Portuguese is used on the job posting, because it was written in Brazilian Portuguese. According to the Help Center, "dialect differences" and "The meaning of a word or expression in context (if it is not clear from the dictionary definition)" are on-topic, and "Anything not directly related to the Portuguese language" is off-topic. This does seem to be a question about the meaning of salário in context.
There is still some doubt as to whether this is directly related to the Portuguese language. Imagine if the job posting were written in English, and used the word salary. If the answer to the question would be the same, because it's the concept of a salary—not the word salário—that is understood to mean "yearly salary" in some places and "monthly salary" in others, then maybe this shouldn't be on-topic here? (In other words, can we ask questions about semantics in Portuguese-speaking regions that go beyond the Portuguese language itself here?) In that case, it might be a better question for another site. Maybe the Expatriates or Workplace StackExchange sites? (Warning: I don't know if those communities would welcome the question. Expatriates in particular might not.)
So which is it: on-topic or not? And is there a more general principle we can use to determine if questions like this are on-topic here?