Learn Spanish (Spain): El fundador es la persona para quien trabajo ahora. - The founder is the person for whom I work now.

In Spanish, when a relative pronoun comes after a preposition (like para) and refers to a person, we use quien (singular) or quienes (plural). While que is the most common relative pronoun, it generally isn't used right after prepositions like para, con, or de when talking about people.

Why is it para quien and not por quien?

We use para here because it indicates the recipient or the employer you direct your work toward. If you used por, the phrase por quien trabajo would mean 'on behalf of whom I work' (like covering their shift) or 'because of whom I work' (they are your motivation).

Does quien change to match the gender of la persona?

No, quien only changes for number, not gender. Because it refers to a single person (la persona), we use quien. If it referred to multiple people, it would become quienes. It stays exactly the same whether the person referred to is masculine or feminine.

In English we often say 'the person I work for'. Can I put para at the end of the sentence in Spanish?

No, you can never end a clause or sentence with a preposition in Spanish. While informal English allows 'the person I work for', Spanish requires the preposition to stay right before the relative pronoun, mimicking the formal English structure 'the person for whom I work'.